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[thirdparty/binutils-gdb.git] / bfd / elf64-x86-64.c
CommitLineData
351f65ca 1/* X86-64 specific support for ELF
b90efa5b 2 Copyright (C) 2000-2015 Free Software Foundation, Inc.
8d88c4ca
NC
3 Contributed by Jan Hubicka <jh@suse.cz>.
4
ae9a127f 5 This file is part of BFD, the Binary File Descriptor library.
8d88c4ca 6
ae9a127f
NC
7 This program is free software; you can redistribute it and/or modify
8 it under the terms of the GNU General Public License as published by
cd123cb7 9 the Free Software Foundation; either version 3 of the License, or
ae9a127f 10 (at your option) any later version.
8d88c4ca 11
ae9a127f
NC
12 This program is distributed in the hope that it will be useful,
13 but WITHOUT ANY WARRANTY; without even the implied warranty of
14 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
15 GNU General Public License for more details.
8d88c4ca 16
ae9a127f
NC
17 You should have received a copy of the GNU General Public License
18 along with this program; if not, write to the Free Software
cd123cb7
NC
19 Foundation, Inc., 51 Franklin Street - Fifth Floor, Boston,
20 MA 02110-1301, USA. */
8d88c4ca 21
8d88c4ca 22#include "sysdep.h"
3db64b00 23#include "bfd.h"
c434dee6 24#include "bfdlink.h"
8d88c4ca
NC
25#include "libbfd.h"
26#include "elf-bfd.h"
5a68afcf 27#include "elf-nacl.h"
142411ca 28#include "bfd_stdint.h"
c25bc9fc
L
29#include "objalloc.h"
30#include "hashtab.h"
e41b3a13 31#include "dwarf2.h"
d7921315 32#include "libiberty.h"
8d88c4ca 33
56ceb5b5 34#include "opcode/i386.h"
8d88c4ca
NC
35#include "elf/x86-64.h"
36
8fd79e71
L
37#ifdef CORE_HEADER
38#include <stdarg.h>
39#include CORE_HEADER
40#endif
41
8d88c4ca
NC
42/* In case we're on a 32-bit machine, construct a 64-bit "-1" value. */
43#define MINUS_ONE (~ (bfd_vma) 0)
44
351f65ca
L
45/* Since both 32-bit and 64-bit x86-64 encode relocation type in the
46 identical manner, we use ELF32_R_TYPE instead of ELF64_R_TYPE to get
47 relocation type. We also use ELF_ST_TYPE instead of ELF64_ST_TYPE
48 since they are the same. */
49
50#define ABI_64_P(abfd) \
51 (get_elf_backend_data (abfd)->s->elfclass == ELFCLASS64)
52
8d88c4ca 53/* The relocation "howto" table. Order of fields:
7b81dfbb
AJ
54 type, rightshift, size, bitsize, pc_relative, bitpos, complain_on_overflow,
55 special_function, name, partial_inplace, src_mask, dst_mask, pcrel_offset. */
70256ad8
AJ
56static reloc_howto_type x86_64_elf_howto_table[] =
57{
6346d5ca 58 HOWTO(R_X86_64_NONE, 0, 3, 0, FALSE, 0, complain_overflow_dont,
b34976b6
AM
59 bfd_elf_generic_reloc, "R_X86_64_NONE", FALSE, 0x00000000, 0x00000000,
60 FALSE),
61 HOWTO(R_X86_64_64, 0, 4, 64, FALSE, 0, complain_overflow_bitfield,
62 bfd_elf_generic_reloc, "R_X86_64_64", FALSE, MINUS_ONE, MINUS_ONE,
63 FALSE),
64 HOWTO(R_X86_64_PC32, 0, 2, 32, TRUE, 0, complain_overflow_signed,
65 bfd_elf_generic_reloc, "R_X86_64_PC32", FALSE, 0xffffffff, 0xffffffff,
66 TRUE),
67 HOWTO(R_X86_64_GOT32, 0, 2, 32, FALSE, 0, complain_overflow_signed,
68 bfd_elf_generic_reloc, "R_X86_64_GOT32", FALSE, 0xffffffff, 0xffffffff,
69 FALSE),
70 HOWTO(R_X86_64_PLT32, 0, 2, 32, TRUE, 0, complain_overflow_signed,
71 bfd_elf_generic_reloc, "R_X86_64_PLT32", FALSE, 0xffffffff, 0xffffffff,
72 TRUE),
73 HOWTO(R_X86_64_COPY, 0, 2, 32, FALSE, 0, complain_overflow_bitfield,
74 bfd_elf_generic_reloc, "R_X86_64_COPY", FALSE, 0xffffffff, 0xffffffff,
75 FALSE),
76 HOWTO(R_X86_64_GLOB_DAT, 0, 4, 64, FALSE, 0, complain_overflow_bitfield,
77 bfd_elf_generic_reloc, "R_X86_64_GLOB_DAT", FALSE, MINUS_ONE,
78 MINUS_ONE, FALSE),
79 HOWTO(R_X86_64_JUMP_SLOT, 0, 4, 64, FALSE, 0, complain_overflow_bitfield,
80 bfd_elf_generic_reloc, "R_X86_64_JUMP_SLOT", FALSE, MINUS_ONE,
81 MINUS_ONE, FALSE),
82 HOWTO(R_X86_64_RELATIVE, 0, 4, 64, FALSE, 0, complain_overflow_bitfield,
83 bfd_elf_generic_reloc, "R_X86_64_RELATIVE", FALSE, MINUS_ONE,
84 MINUS_ONE, FALSE),
85 HOWTO(R_X86_64_GOTPCREL, 0, 2, 32, TRUE, 0, complain_overflow_signed,
86 bfd_elf_generic_reloc, "R_X86_64_GOTPCREL", FALSE, 0xffffffff,
87 0xffffffff, TRUE),
88 HOWTO(R_X86_64_32, 0, 2, 32, FALSE, 0, complain_overflow_unsigned,
89 bfd_elf_generic_reloc, "R_X86_64_32", FALSE, 0xffffffff, 0xffffffff,
90 FALSE),
91 HOWTO(R_X86_64_32S, 0, 2, 32, FALSE, 0, complain_overflow_signed,
92 bfd_elf_generic_reloc, "R_X86_64_32S", FALSE, 0xffffffff, 0xffffffff,
93 FALSE),
94 HOWTO(R_X86_64_16, 0, 1, 16, FALSE, 0, complain_overflow_bitfield,
95 bfd_elf_generic_reloc, "R_X86_64_16", FALSE, 0xffff, 0xffff, FALSE),
b0360d8c 96 HOWTO(R_X86_64_PC16,0, 1, 16, TRUE, 0, complain_overflow_bitfield,
b34976b6 97 bfd_elf_generic_reloc, "R_X86_64_PC16", FALSE, 0xffff, 0xffff, TRUE),
ac2aa337 98 HOWTO(R_X86_64_8, 0, 0, 8, FALSE, 0, complain_overflow_bitfield,
b34976b6
AM
99 bfd_elf_generic_reloc, "R_X86_64_8", FALSE, 0xff, 0xff, FALSE),
100 HOWTO(R_X86_64_PC8, 0, 0, 8, TRUE, 0, complain_overflow_signed,
101 bfd_elf_generic_reloc, "R_X86_64_PC8", FALSE, 0xff, 0xff, TRUE),
102 HOWTO(R_X86_64_DTPMOD64, 0, 4, 64, FALSE, 0, complain_overflow_bitfield,
103 bfd_elf_generic_reloc, "R_X86_64_DTPMOD64", FALSE, MINUS_ONE,
104 MINUS_ONE, FALSE),
105 HOWTO(R_X86_64_DTPOFF64, 0, 4, 64, FALSE, 0, complain_overflow_bitfield,
106 bfd_elf_generic_reloc, "R_X86_64_DTPOFF64", FALSE, MINUS_ONE,
107 MINUS_ONE, FALSE),
108 HOWTO(R_X86_64_TPOFF64, 0, 4, 64, FALSE, 0, complain_overflow_bitfield,
109 bfd_elf_generic_reloc, "R_X86_64_TPOFF64", FALSE, MINUS_ONE,
110 MINUS_ONE, FALSE),
111 HOWTO(R_X86_64_TLSGD, 0, 2, 32, TRUE, 0, complain_overflow_signed,
112 bfd_elf_generic_reloc, "R_X86_64_TLSGD", FALSE, 0xffffffff,
113 0xffffffff, TRUE),
114 HOWTO(R_X86_64_TLSLD, 0, 2, 32, TRUE, 0, complain_overflow_signed,
115 bfd_elf_generic_reloc, "R_X86_64_TLSLD", FALSE, 0xffffffff,
116 0xffffffff, TRUE),
ac2aa337 117 HOWTO(R_X86_64_DTPOFF32, 0, 2, 32, FALSE, 0, complain_overflow_signed,
b34976b6
AM
118 bfd_elf_generic_reloc, "R_X86_64_DTPOFF32", FALSE, 0xffffffff,
119 0xffffffff, FALSE),
120 HOWTO(R_X86_64_GOTTPOFF, 0, 2, 32, TRUE, 0, complain_overflow_signed,
121 bfd_elf_generic_reloc, "R_X86_64_GOTTPOFF", FALSE, 0xffffffff,
122 0xffffffff, TRUE),
123 HOWTO(R_X86_64_TPOFF32, 0, 2, 32, FALSE, 0, complain_overflow_signed,
124 bfd_elf_generic_reloc, "R_X86_64_TPOFF32", FALSE, 0xffffffff,
125 0xffffffff, FALSE),
d6ab8113
JB
126 HOWTO(R_X86_64_PC64, 0, 4, 64, TRUE, 0, complain_overflow_bitfield,
127 bfd_elf_generic_reloc, "R_X86_64_PC64", FALSE, MINUS_ONE, MINUS_ONE,
128 TRUE),
129 HOWTO(R_X86_64_GOTOFF64, 0, 4, 64, FALSE, 0, complain_overflow_bitfield,
130 bfd_elf_generic_reloc, "R_X86_64_GOTOFF64",
131 FALSE, MINUS_ONE, MINUS_ONE, FALSE),
132 HOWTO(R_X86_64_GOTPC32, 0, 2, 32, TRUE, 0, complain_overflow_signed,
133 bfd_elf_generic_reloc, "R_X86_64_GOTPC32",
134 FALSE, 0xffffffff, 0xffffffff, TRUE),
7b81dfbb
AJ
135 HOWTO(R_X86_64_GOT64, 0, 4, 64, FALSE, 0, complain_overflow_signed,
136 bfd_elf_generic_reloc, "R_X86_64_GOT64", FALSE, MINUS_ONE, MINUS_ONE,
137 FALSE),
138 HOWTO(R_X86_64_GOTPCREL64, 0, 4, 64, TRUE, 0, complain_overflow_signed,
139 bfd_elf_generic_reloc, "R_X86_64_GOTPCREL64", FALSE, MINUS_ONE,
140 MINUS_ONE, TRUE),
141 HOWTO(R_X86_64_GOTPC64, 0, 4, 64, TRUE, 0, complain_overflow_signed,
142 bfd_elf_generic_reloc, "R_X86_64_GOTPC64",
143 FALSE, MINUS_ONE, MINUS_ONE, TRUE),
144 HOWTO(R_X86_64_GOTPLT64, 0, 4, 64, FALSE, 0, complain_overflow_signed,
145 bfd_elf_generic_reloc, "R_X86_64_GOTPLT64", FALSE, MINUS_ONE,
146 MINUS_ONE, FALSE),
147 HOWTO(R_X86_64_PLTOFF64, 0, 4, 64, FALSE, 0, complain_overflow_signed,
148 bfd_elf_generic_reloc, "R_X86_64_PLTOFF64", FALSE, MINUS_ONE,
149 MINUS_ONE, FALSE),
1788fc08
L
150 HOWTO(R_X86_64_SIZE32, 0, 2, 32, FALSE, 0, complain_overflow_unsigned,
151 bfd_elf_generic_reloc, "R_X86_64_SIZE32", FALSE, 0xffffffff, 0xffffffff,
152 FALSE),
153 HOWTO(R_X86_64_SIZE64, 0, 4, 64, FALSE, 0, complain_overflow_unsigned,
154 bfd_elf_generic_reloc, "R_X86_64_SIZE64", FALSE, MINUS_ONE, MINUS_ONE,
155 FALSE),
67a4f2b7
AO
156 HOWTO(R_X86_64_GOTPC32_TLSDESC, 0, 2, 32, TRUE, 0,
157 complain_overflow_bitfield, bfd_elf_generic_reloc,
158 "R_X86_64_GOTPC32_TLSDESC",
159 FALSE, 0xffffffff, 0xffffffff, TRUE),
160 HOWTO(R_X86_64_TLSDESC_CALL, 0, 0, 0, FALSE, 0,
161 complain_overflow_dont, bfd_elf_generic_reloc,
162 "R_X86_64_TLSDESC_CALL",
163 FALSE, 0, 0, FALSE),
164 HOWTO(R_X86_64_TLSDESC, 0, 4, 64, FALSE, 0,
165 complain_overflow_bitfield, bfd_elf_generic_reloc,
166 "R_X86_64_TLSDESC",
167 FALSE, MINUS_ONE, MINUS_ONE, FALSE),
cbe950e9
L
168 HOWTO(R_X86_64_IRELATIVE, 0, 4, 64, FALSE, 0, complain_overflow_bitfield,
169 bfd_elf_generic_reloc, "R_X86_64_IRELATIVE", FALSE, MINUS_ONE,
170 MINUS_ONE, FALSE),
64d25c44
L
171 HOWTO(R_X86_64_RELATIVE64, 0, 4, 64, FALSE, 0, complain_overflow_bitfield,
172 bfd_elf_generic_reloc, "R_X86_64_RELATIVE64", FALSE, MINUS_ONE,
173 MINUS_ONE, FALSE),
c3320543
L
174 HOWTO(R_X86_64_PC32_BND, 0, 2, 32, TRUE, 0, complain_overflow_signed,
175 bfd_elf_generic_reloc, "R_X86_64_PC32_BND", FALSE, 0xffffffff, 0xffffffff,
176 TRUE),
177 HOWTO(R_X86_64_PLT32_BND, 0, 2, 32, TRUE, 0, complain_overflow_signed,
178 bfd_elf_generic_reloc, "R_X86_64_PLT32_BND", FALSE, 0xffffffff, 0xffffffff,
179 TRUE),
56ceb5b5
L
180 HOWTO(R_X86_64_GOTPCRELX, 0, 2, 32, TRUE, 0, complain_overflow_signed,
181 bfd_elf_generic_reloc, "R_X86_64_GOTPCRELX", FALSE, 0xffffffff,
182 0xffffffff, TRUE),
183 HOWTO(R_X86_64_REX_GOTPCRELX, 0, 2, 32, TRUE, 0, complain_overflow_signed,
184 bfd_elf_generic_reloc, "R_X86_64_REX_GOTPCRELX", FALSE, 0xffffffff,
185 0xffffffff, TRUE),
fe4770f4 186
a33d77bc
JB
187 /* We have a gap in the reloc numbers here.
188 R_X86_64_standard counts the number up to this point, and
189 R_X86_64_vt_offset is the value to subtract from a reloc type of
190 R_X86_64_GNU_VT* to form an index into this table. */
56ceb5b5 191#define R_X86_64_standard (R_X86_64_REX_GOTPCRELX + 1)
a33d77bc
JB
192#define R_X86_64_vt_offset (R_X86_64_GNU_VTINHERIT - R_X86_64_standard)
193
fe4770f4 194/* GNU extension to record C++ vtable hierarchy. */
b34976b6
AM
195 HOWTO (R_X86_64_GNU_VTINHERIT, 0, 4, 0, FALSE, 0, complain_overflow_dont,
196 NULL, "R_X86_64_GNU_VTINHERIT", FALSE, 0, 0, FALSE),
fe4770f4
AJ
197
198/* GNU extension to record C++ vtable member usage. */
b34976b6
AM
199 HOWTO (R_X86_64_GNU_VTENTRY, 0, 4, 0, FALSE, 0, complain_overflow_dont,
200 _bfd_elf_rel_vtable_reloc_fn, "R_X86_64_GNU_VTENTRY", FALSE, 0, 0,
d7921315
L
201 FALSE),
202
203/* Use complain_overflow_bitfield on R_X86_64_32 for x32. */
204 HOWTO(R_X86_64_32, 0, 2, 32, FALSE, 0, complain_overflow_bitfield,
205 bfd_elf_generic_reloc, "R_X86_64_32", FALSE, 0xffffffff, 0xffffffff,
206 FALSE)
8d88c4ca
NC
207};
208
d8045f23
NC
209#define IS_X86_64_PCREL_TYPE(TYPE) \
210 ( ((TYPE) == R_X86_64_PC8) \
211 || ((TYPE) == R_X86_64_PC16) \
212 || ((TYPE) == R_X86_64_PC32) \
c3320543 213 || ((TYPE) == R_X86_64_PC32_BND) \
d8045f23
NC
214 || ((TYPE) == R_X86_64_PC64))
215
8d88c4ca 216/* Map BFD relocs to the x86_64 elf relocs. */
70256ad8
AJ
217struct elf_reloc_map
218{
8d88c4ca
NC
219 bfd_reloc_code_real_type bfd_reloc_val;
220 unsigned char elf_reloc_val;
221};
222
dc810e39 223static const struct elf_reloc_map x86_64_reloc_map[] =
8d88c4ca 224{
70256ad8
AJ
225 { BFD_RELOC_NONE, R_X86_64_NONE, },
226 { BFD_RELOC_64, R_X86_64_64, },
227 { BFD_RELOC_32_PCREL, R_X86_64_PC32, },
228 { BFD_RELOC_X86_64_GOT32, R_X86_64_GOT32,},
229 { BFD_RELOC_X86_64_PLT32, R_X86_64_PLT32,},
230 { BFD_RELOC_X86_64_COPY, R_X86_64_COPY, },
231 { BFD_RELOC_X86_64_GLOB_DAT, R_X86_64_GLOB_DAT, },
232 { BFD_RELOC_X86_64_JUMP_SLOT, R_X86_64_JUMP_SLOT, },
233 { BFD_RELOC_X86_64_RELATIVE, R_X86_64_RELATIVE, },
234 { BFD_RELOC_X86_64_GOTPCREL, R_X86_64_GOTPCREL, },
235 { BFD_RELOC_32, R_X86_64_32, },
236 { BFD_RELOC_X86_64_32S, R_X86_64_32S, },
237 { BFD_RELOC_16, R_X86_64_16, },
238 { BFD_RELOC_16_PCREL, R_X86_64_PC16, },
239 { BFD_RELOC_8, R_X86_64_8, },
240 { BFD_RELOC_8_PCREL, R_X86_64_PC8, },
bffbf940
JJ
241 { BFD_RELOC_X86_64_DTPMOD64, R_X86_64_DTPMOD64, },
242 { BFD_RELOC_X86_64_DTPOFF64, R_X86_64_DTPOFF64, },
243 { BFD_RELOC_X86_64_TPOFF64, R_X86_64_TPOFF64, },
244 { BFD_RELOC_X86_64_TLSGD, R_X86_64_TLSGD, },
245 { BFD_RELOC_X86_64_TLSLD, R_X86_64_TLSLD, },
246 { BFD_RELOC_X86_64_DTPOFF32, R_X86_64_DTPOFF32, },
247 { BFD_RELOC_X86_64_GOTTPOFF, R_X86_64_GOTTPOFF, },
248 { BFD_RELOC_X86_64_TPOFF32, R_X86_64_TPOFF32, },
d6ab8113
JB
249 { BFD_RELOC_64_PCREL, R_X86_64_PC64, },
250 { BFD_RELOC_X86_64_GOTOFF64, R_X86_64_GOTOFF64, },
251 { BFD_RELOC_X86_64_GOTPC32, R_X86_64_GOTPC32, },
7b81dfbb
AJ
252 { BFD_RELOC_X86_64_GOT64, R_X86_64_GOT64, },
253 { BFD_RELOC_X86_64_GOTPCREL64,R_X86_64_GOTPCREL64, },
254 { BFD_RELOC_X86_64_GOTPC64, R_X86_64_GOTPC64, },
255 { BFD_RELOC_X86_64_GOTPLT64, R_X86_64_GOTPLT64, },
256 { BFD_RELOC_X86_64_PLTOFF64, R_X86_64_PLTOFF64, },
1788fc08
L
257 { BFD_RELOC_SIZE32, R_X86_64_SIZE32, },
258 { BFD_RELOC_SIZE64, R_X86_64_SIZE64, },
67a4f2b7
AO
259 { BFD_RELOC_X86_64_GOTPC32_TLSDESC, R_X86_64_GOTPC32_TLSDESC, },
260 { BFD_RELOC_X86_64_TLSDESC_CALL, R_X86_64_TLSDESC_CALL, },
261 { BFD_RELOC_X86_64_TLSDESC, R_X86_64_TLSDESC, },
cbe950e9 262 { BFD_RELOC_X86_64_IRELATIVE, R_X86_64_IRELATIVE, },
56ceb5b5
L
263 { BFD_RELOC_X86_64_PC32_BND, R_X86_64_PC32_BND, },
264 { BFD_RELOC_X86_64_PLT32_BND, R_X86_64_PLT32_BND, },
265 { BFD_RELOC_X86_64_GOTPCRELX, R_X86_64_GOTPCRELX, },
266 { BFD_RELOC_X86_64_REX_GOTPCRELX, R_X86_64_REX_GOTPCRELX, },
fe4770f4
AJ
267 { BFD_RELOC_VTABLE_INHERIT, R_X86_64_GNU_VTINHERIT, },
268 { BFD_RELOC_VTABLE_ENTRY, R_X86_64_GNU_VTENTRY, },
8d88c4ca
NC
269};
270
67a4f2b7 271static reloc_howto_type *
351f65ca 272elf_x86_64_rtype_to_howto (bfd *abfd, unsigned r_type)
67a4f2b7
AO
273{
274 unsigned i;
275
d7921315
L
276 if (r_type == (unsigned int) R_X86_64_32)
277 {
278 if (ABI_64_P (abfd))
279 i = r_type;
280 else
281 i = ARRAY_SIZE (x86_64_elf_howto_table) - 1;
282 }
283 else if (r_type < (unsigned int) R_X86_64_GNU_VTINHERIT
284 || r_type >= (unsigned int) R_X86_64_max)
67a4f2b7
AO
285 {
286 if (r_type >= (unsigned int) R_X86_64_standard)
287 {
288 (*_bfd_error_handler) (_("%B: invalid relocation type %d"),
289 abfd, (int) r_type);
290 r_type = R_X86_64_NONE;
291 }
292 i = r_type;
293 }
294 else
295 i = r_type - (unsigned int) R_X86_64_vt_offset;
296 BFD_ASSERT (x86_64_elf_howto_table[i].type == r_type);
297 return &x86_64_elf_howto_table[i];
298}
8d88c4ca
NC
299
300/* Given a BFD reloc type, return a HOWTO structure. */
301static reloc_howto_type *
351f65ca
L
302elf_x86_64_reloc_type_lookup (bfd *abfd,
303 bfd_reloc_code_real_type code)
8d88c4ca
NC
304{
305 unsigned int i;
27482721 306
8d88c4ca
NC
307 for (i = 0; i < sizeof (x86_64_reloc_map) / sizeof (struct elf_reloc_map);
308 i++)
309 {
310 if (x86_64_reloc_map[i].bfd_reloc_val == code)
351f65ca
L
311 return elf_x86_64_rtype_to_howto (abfd,
312 x86_64_reloc_map[i].elf_reloc_val);
8d88c4ca 313 }
5860e3f8 314 return NULL;
8d88c4ca
NC
315}
316
157090f7 317static reloc_howto_type *
d7921315 318elf_x86_64_reloc_name_lookup (bfd *abfd,
351f65ca 319 const char *r_name)
157090f7
AM
320{
321 unsigned int i;
322
d7921315
L
323 if (!ABI_64_P (abfd) && strcasecmp (r_name, "R_X86_64_32") == 0)
324 {
325 /* Get x32 R_X86_64_32. */
326 reloc_howto_type *reloc
327 = &x86_64_elf_howto_table[ARRAY_SIZE (x86_64_elf_howto_table) - 1];
328 BFD_ASSERT (reloc->type == (unsigned int) R_X86_64_32);
329 return reloc;
330 }
331
332 for (i = 0; i < ARRAY_SIZE (x86_64_elf_howto_table); i++)
157090f7
AM
333 if (x86_64_elf_howto_table[i].name != NULL
334 && strcasecmp (x86_64_elf_howto_table[i].name, r_name) == 0)
335 return &x86_64_elf_howto_table[i];
336
337 return NULL;
338}
339
8d88c4ca 340/* Given an x86_64 ELF reloc type, fill in an arelent structure. */
8da6118f 341
8d88c4ca 342static void
351f65ca
L
343elf_x86_64_info_to_howto (bfd *abfd ATTRIBUTE_UNUSED, arelent *cache_ptr,
344 Elf_Internal_Rela *dst)
8d88c4ca 345{
67a4f2b7 346 unsigned r_type;
8d88c4ca 347
351f65ca
L
348 r_type = ELF32_R_TYPE (dst->r_info);
349 cache_ptr->howto = elf_x86_64_rtype_to_howto (abfd, r_type);
8d88c4ca
NC
350 BFD_ASSERT (r_type == cache_ptr->howto->type);
351}
70256ad8 352\f
3bab7989 353/* Support for core dump NOTE sections. */
b34976b6 354static bfd_boolean
351f65ca 355elf_x86_64_grok_prstatus (bfd *abfd, Elf_Internal_Note *note)
3bab7989
ML
356{
357 int offset;
eea6121a 358 size_t size;
3bab7989
ML
359
360 switch (note->descsz)
361 {
362 default:
b34976b6 363 return FALSE;
3bab7989 364
bcd823f1
L
365 case 296: /* sizeof(istruct elf_prstatus) on Linux/x32 */
366 /* pr_cursig */
228e534f 367 elf_tdata (abfd)->core->signal = bfd_get_16 (abfd, note->descdata + 12);
bcd823f1
L
368
369 /* pr_pid */
228e534f 370 elf_tdata (abfd)->core->lwpid = bfd_get_32 (abfd, note->descdata + 24);
bcd823f1
L
371
372 /* pr_reg */
373 offset = 72;
374 size = 216;
375
376 break;
377
3bab7989
ML
378 case 336: /* sizeof(istruct elf_prstatus) on Linux/x86_64 */
379 /* pr_cursig */
228e534f 380 elf_tdata (abfd)->core->signal
3bab7989
ML
381 = bfd_get_16 (abfd, note->descdata + 12);
382
383 /* pr_pid */
228e534f 384 elf_tdata (abfd)->core->lwpid
3bab7989
ML
385 = bfd_get_32 (abfd, note->descdata + 32);
386
387 /* pr_reg */
388 offset = 112;
eea6121a 389 size = 216;
3bab7989
ML
390
391 break;
392 }
393
394 /* Make a ".reg/999" section. */
395 return _bfd_elfcore_make_pseudosection (abfd, ".reg",
eea6121a 396 size, note->descpos + offset);
3bab7989
ML
397}
398
b34976b6 399static bfd_boolean
351f65ca 400elf_x86_64_grok_psinfo (bfd *abfd, Elf_Internal_Note *note)
3bab7989
ML
401{
402 switch (note->descsz)
403 {
404 default:
b34976b6 405 return FALSE;
3bab7989 406
bcd823f1 407 case 124: /* sizeof(struct elf_prpsinfo) on Linux/x32 */
228e534f 408 elf_tdata (abfd)->core->pid
bcd823f1 409 = bfd_get_32 (abfd, note->descdata + 12);
228e534f 410 elf_tdata (abfd)->core->program
bcd823f1 411 = _bfd_elfcore_strndup (abfd, note->descdata + 28, 16);
228e534f 412 elf_tdata (abfd)->core->command
bcd823f1
L
413 = _bfd_elfcore_strndup (abfd, note->descdata + 44, 80);
414 break;
415
3bab7989 416 case 136: /* sizeof(struct elf_prpsinfo) on Linux/x86_64 */
228e534f 417 elf_tdata (abfd)->core->pid
261b8d08 418 = bfd_get_32 (abfd, note->descdata + 24);
228e534f 419 elf_tdata (abfd)->core->program
3bab7989 420 = _bfd_elfcore_strndup (abfd, note->descdata + 40, 16);
228e534f 421 elf_tdata (abfd)->core->command
3bab7989
ML
422 = _bfd_elfcore_strndup (abfd, note->descdata + 56, 80);
423 }
424
425 /* Note that for some reason, a spurious space is tacked
426 onto the end of the args in some (at least one anyway)
427 implementations, so strip it off if it exists. */
428
429 {
228e534f 430 char *command = elf_tdata (abfd)->core->command;
3bab7989
ML
431 int n = strlen (command);
432
433 if (0 < n && command[n - 1] == ' ')
434 command[n - 1] = '\0';
435 }
436
b34976b6 437 return TRUE;
3bab7989 438}
8fd79e71
L
439
440#ifdef CORE_HEADER
441static char *
442elf_x86_64_write_core_note (bfd *abfd, char *buf, int *bufsiz,
443 int note_type, ...)
444{
445 const struct elf_backend_data *bed = get_elf_backend_data (abfd);
8fd79e71
L
446 va_list ap;
447 const char *fname, *psargs;
448 long pid;
449 int cursig;
450 const void *gregs;
451
452 switch (note_type)
453 {
454 default:
455 return NULL;
456
457 case NT_PRPSINFO:
458 va_start (ap, note_type);
459 fname = va_arg (ap, const char *);
460 psargs = va_arg (ap, const char *);
461 va_end (ap);
462
463 if (bed->s->elfclass == ELFCLASS32)
464 {
465 prpsinfo32_t data;
466 memset (&data, 0, sizeof (data));
467 strncpy (data.pr_fname, fname, sizeof (data.pr_fname));
468 strncpy (data.pr_psargs, psargs, sizeof (data.pr_psargs));
e85c6a70
JK
469 return elfcore_write_note (abfd, buf, bufsiz, "CORE", note_type,
470 &data, sizeof (data));
8fd79e71
L
471 }
472 else
473 {
b1bd052d 474 prpsinfo64_t data;
8fd79e71
L
475 memset (&data, 0, sizeof (data));
476 strncpy (data.pr_fname, fname, sizeof (data.pr_fname));
477 strncpy (data.pr_psargs, psargs, sizeof (data.pr_psargs));
e85c6a70
JK
478 return elfcore_write_note (abfd, buf, bufsiz, "CORE", note_type,
479 &data, sizeof (data));
8fd79e71 480 }
e85c6a70 481 /* NOTREACHED */
8fd79e71
L
482
483 case NT_PRSTATUS:
484 va_start (ap, note_type);
485 pid = va_arg (ap, long);
486 cursig = va_arg (ap, int);
487 gregs = va_arg (ap, const void *);
488 va_end (ap);
489
490 if (bed->s->elfclass == ELFCLASS32)
491 {
492 if (bed->elf_machine_code == EM_X86_64)
493 {
494 prstatusx32_t prstat;
495 memset (&prstat, 0, sizeof (prstat));
496 prstat.pr_pid = pid;
497 prstat.pr_cursig = cursig;
498 memcpy (&prstat.pr_reg, gregs, sizeof (prstat.pr_reg));
e85c6a70
JK
499 return elfcore_write_note (abfd, buf, bufsiz, "CORE", note_type,
500 &prstat, sizeof (prstat));
8fd79e71
L
501 }
502 else
503 {
504 prstatus32_t prstat;
505 memset (&prstat, 0, sizeof (prstat));
506 prstat.pr_pid = pid;
507 prstat.pr_cursig = cursig;
508 memcpy (&prstat.pr_reg, gregs, sizeof (prstat.pr_reg));
e85c6a70
JK
509 return elfcore_write_note (abfd, buf, bufsiz, "CORE", note_type,
510 &prstat, sizeof (prstat));
8fd79e71
L
511 }
512 }
513 else
514 {
b1bd052d 515 prstatus64_t prstat;
8fd79e71
L
516 memset (&prstat, 0, sizeof (prstat));
517 prstat.pr_pid = pid;
518 prstat.pr_cursig = cursig;
519 memcpy (&prstat.pr_reg, gregs, sizeof (prstat.pr_reg));
e85c6a70
JK
520 return elfcore_write_note (abfd, buf, bufsiz, "CORE", note_type,
521 &prstat, sizeof (prstat));
8fd79e71 522 }
8fd79e71 523 }
e85c6a70 524 /* NOTREACHED */
8fd79e71
L
525}
526#endif
3bab7989 527\f
407443a3 528/* Functions for the x86-64 ELF linker. */
70256ad8 529
407443a3 530/* The name of the dynamic interpreter. This is put in the .interp
70256ad8
AJ
531 section. */
532
351f65ca 533#define ELF64_DYNAMIC_INTERPRETER "/lib/ld64.so.1"
eec9dd95 534#define ELF32_DYNAMIC_INTERPRETER "/lib/ldx32.so.1"
70256ad8 535
d40d037c
AJ
536/* If ELIMINATE_COPY_RELOCS is non-zero, the linker will try to avoid
537 copying dynamic variables from a shared lib into an app's dynbss
538 section, and instead use a dynamic relocation to point into the
539 shared lib. */
540#define ELIMINATE_COPY_RELOCS 1
541
70256ad8
AJ
542/* The size in bytes of an entry in the global offset table. */
543
544#define GOT_ENTRY_SIZE 8
8d88c4ca 545
70256ad8 546/* The size in bytes of an entry in the procedure linkage table. */
8d88c4ca 547
70256ad8
AJ
548#define PLT_ENTRY_SIZE 16
549
550/* The first entry in a procedure linkage table looks like this. See the
551 SVR4 ABI i386 supplement and the x86-64 ABI to see how this works. */
552
351f65ca 553static const bfd_byte elf_x86_64_plt0_entry[PLT_ENTRY_SIZE] =
70256ad8 554{
653165cc
AJ
555 0xff, 0x35, 8, 0, 0, 0, /* pushq GOT+8(%rip) */
556 0xff, 0x25, 16, 0, 0, 0, /* jmpq *GOT+16(%rip) */
10efb593 557 0x0f, 0x1f, 0x40, 0x00 /* nopl 0(%rax) */
70256ad8
AJ
558};
559
560/* Subsequent entries in a procedure linkage table look like this. */
561
351f65ca 562static const bfd_byte elf_x86_64_plt_entry[PLT_ENTRY_SIZE] =
70256ad8 563{
653165cc 564 0xff, 0x25, /* jmpq *name@GOTPC(%rip) */
407443a3 565 0, 0, 0, 0, /* replaced with offset to this symbol in .got. */
653165cc 566 0x68, /* pushq immediate */
70256ad8
AJ
567 0, 0, 0, 0, /* replaced with index into relocation table. */
568 0xe9, /* jmp relative */
569 0, 0, 0, 0 /* replaced with offset to start of .plt0. */
570};
571
0ff2b86e
L
572/* The first entry in a procedure linkage table with BND relocations
573 like this. */
574
575static const bfd_byte elf_x86_64_bnd_plt0_entry[PLT_ENTRY_SIZE] =
576{
577 0xff, 0x35, 8, 0, 0, 0, /* pushq GOT+8(%rip) */
578 0xf2, 0xff, 0x25, 16, 0, 0, 0, /* bnd jmpq *GOT+16(%rip) */
579 0x0f, 0x1f, 0 /* nopl (%rax) */
580};
581
582/* Subsequent entries for legacy branches in a procedure linkage table
583 with BND relocations look like this. */
584
585static const bfd_byte elf_x86_64_legacy_plt_entry[PLT_ENTRY_SIZE] =
586{
587 0x68, 0, 0, 0, 0, /* pushq immediate */
588 0xe9, 0, 0, 0, 0, /* jmpq relative */
589 0x66, 0x0f, 0x1f, 0x44, 0, 0 /* nopw (%rax,%rax,1) */
590};
591
592/* Subsequent entries for branches with BND prefx in a procedure linkage
593 table with BND relocations look like this. */
594
595static const bfd_byte elf_x86_64_bnd_plt_entry[PLT_ENTRY_SIZE] =
596{
597 0x68, 0, 0, 0, 0, /* pushq immediate */
598 0xf2, 0xe9, 0, 0, 0, 0, /* bnd jmpq relative */
599 0x0f, 0x1f, 0x44, 0, 0 /* nopl 0(%rax,%rax,1) */
600};
601
602/* Entries for legacy branches in the second procedure linkage table
603 look like this. */
604
605static const bfd_byte elf_x86_64_legacy_plt2_entry[8] =
606{
607 0xff, 0x25, /* jmpq *name@GOTPC(%rip) */
608 0, 0, 0, 0, /* replaced with offset to this symbol in .got. */
609 0x66, 0x90 /* xchg %ax,%ax */
610};
611
612/* Entries for branches with BND prefix in the second procedure linkage
613 table look like this. */
614
615static const bfd_byte elf_x86_64_bnd_plt2_entry[8] =
616{
617 0xf2, 0xff, 0x25, /* bnd jmpq *name@GOTPC(%rip) */
618 0, 0, 0, 0, /* replaced with offset to this symbol in .got. */
619 0x90 /* nop */
620};
621
e41b3a13
JJ
622/* .eh_frame covering the .plt section. */
623
624static const bfd_byte elf_x86_64_eh_frame_plt[] =
625{
626#define PLT_CIE_LENGTH 20
627#define PLT_FDE_LENGTH 36
628#define PLT_FDE_START_OFFSET 4 + PLT_CIE_LENGTH + 8
629#define PLT_FDE_LEN_OFFSET 4 + PLT_CIE_LENGTH + 12
630 PLT_CIE_LENGTH, 0, 0, 0, /* CIE length */
631 0, 0, 0, 0, /* CIE ID */
632 1, /* CIE version */
633 'z', 'R', 0, /* Augmentation string */
634 1, /* Code alignment factor */
635 0x78, /* Data alignment factor */
636 16, /* Return address column */
637 1, /* Augmentation size */
638 DW_EH_PE_pcrel | DW_EH_PE_sdata4, /* FDE encoding */
639 DW_CFA_def_cfa, 7, 8, /* DW_CFA_def_cfa: r7 (rsp) ofs 8 */
640 DW_CFA_offset + 16, 1, /* DW_CFA_offset: r16 (rip) at cfa-8 */
641 DW_CFA_nop, DW_CFA_nop,
642
643 PLT_FDE_LENGTH, 0, 0, 0, /* FDE length */
644 PLT_CIE_LENGTH + 8, 0, 0, 0, /* CIE pointer */
645 0, 0, 0, 0, /* R_X86_64_PC32 .plt goes here */
646 0, 0, 0, 0, /* .plt size goes here */
647 0, /* Augmentation size */
648 DW_CFA_def_cfa_offset, 16, /* DW_CFA_def_cfa_offset: 16 */
649 DW_CFA_advance_loc + 6, /* DW_CFA_advance_loc: 6 to __PLT__+6 */
650 DW_CFA_def_cfa_offset, 24, /* DW_CFA_def_cfa_offset: 24 */
651 DW_CFA_advance_loc + 10, /* DW_CFA_advance_loc: 10 to __PLT__+16 */
652 DW_CFA_def_cfa_expression, /* DW_CFA_def_cfa_expression */
653 11, /* Block length */
654 DW_OP_breg7, 8, /* DW_OP_breg7 (rsp): 8 */
655 DW_OP_breg16, 0, /* DW_OP_breg16 (rip): 0 */
656 DW_OP_lit15, DW_OP_and, DW_OP_lit11, DW_OP_ge,
657 DW_OP_lit3, DW_OP_shl, DW_OP_plus,
658 DW_CFA_nop, DW_CFA_nop, DW_CFA_nop, DW_CFA_nop
659};
660
eed180f8
RM
661/* Architecture-specific backend data for x86-64. */
662
663struct elf_x86_64_backend_data
664{
665 /* Templates for the initial PLT entry and for subsequent entries. */
666 const bfd_byte *plt0_entry;
667 const bfd_byte *plt_entry;
668 unsigned int plt_entry_size; /* Size of each PLT entry. */
669
670 /* Offsets into plt0_entry that are to be replaced with GOT[1] and GOT[2]. */
671 unsigned int plt0_got1_offset;
672 unsigned int plt0_got2_offset;
673
674 /* Offset of the end of the PC-relative instruction containing
675 plt0_got2_offset. */
676 unsigned int plt0_got2_insn_end;
677
678 /* Offsets into plt_entry that are to be replaced with... */
679 unsigned int plt_got_offset; /* ... address of this symbol in .got. */
680 unsigned int plt_reloc_offset; /* ... offset into relocation table. */
681 unsigned int plt_plt_offset; /* ... offset to start of .plt. */
682
683 /* Length of the PC-relative instruction containing plt_got_offset. */
684 unsigned int plt_got_insn_size;
685
686 /* Offset of the end of the PC-relative jump to plt0_entry. */
687 unsigned int plt_plt_insn_end;
688
689 /* Offset into plt_entry where the initial value of the GOT entry points. */
690 unsigned int plt_lazy_offset;
691
692 /* .eh_frame covering the .plt section. */
693 const bfd_byte *eh_frame_plt;
694 unsigned int eh_frame_plt_size;
695};
696
f8222080
L
697#define get_elf_x86_64_arch_data(bed) \
698 ((const struct elf_x86_64_backend_data *) (bed)->arch_data)
699
eed180f8 700#define get_elf_x86_64_backend_data(abfd) \
f8222080 701 get_elf_x86_64_arch_data (get_elf_backend_data (abfd))
eed180f8
RM
702
703#define GET_PLT_ENTRY_SIZE(abfd) \
704 get_elf_x86_64_backend_data (abfd)->plt_entry_size
705
706/* These are the standard parameters. */
707static const struct elf_x86_64_backend_data elf_x86_64_arch_bed =
708 {
709 elf_x86_64_plt0_entry, /* plt0_entry */
710 elf_x86_64_plt_entry, /* plt_entry */
711 sizeof (elf_x86_64_plt_entry), /* plt_entry_size */
712 2, /* plt0_got1_offset */
713 8, /* plt0_got2_offset */
714 12, /* plt0_got2_insn_end */
715 2, /* plt_got_offset */
716 7, /* plt_reloc_offset */
717 12, /* plt_plt_offset */
718 6, /* plt_got_insn_size */
719 PLT_ENTRY_SIZE, /* plt_plt_insn_end */
720 6, /* plt_lazy_offset */
721 elf_x86_64_eh_frame_plt, /* eh_frame_plt */
722 sizeof (elf_x86_64_eh_frame_plt), /* eh_frame_plt_size */
723 };
724
0ff2b86e
L
725static const struct elf_x86_64_backend_data elf_x86_64_bnd_arch_bed =
726 {
727 elf_x86_64_bnd_plt0_entry, /* plt0_entry */
728 elf_x86_64_bnd_plt_entry, /* plt_entry */
729 sizeof (elf_x86_64_bnd_plt_entry), /* plt_entry_size */
730 2, /* plt0_got1_offset */
731 1+8, /* plt0_got2_offset */
732 1+12, /* plt0_got2_insn_end */
733 1+2, /* plt_got_offset */
734 1, /* plt_reloc_offset */
735 7, /* plt_plt_offset */
736 1+6, /* plt_got_insn_size */
737 11, /* plt_plt_insn_end */
738 0, /* plt_lazy_offset */
739 elf_x86_64_eh_frame_plt, /* eh_frame_plt */
740 sizeof (elf_x86_64_eh_frame_plt), /* eh_frame_plt_size */
741 };
742
eed180f8
RM
743#define elf_backend_arch_data &elf_x86_64_arch_bed
744
70256ad8
AJ
745/* x86-64 ELF linker hash entry. */
746
351f65ca 747struct elf_x86_64_link_hash_entry
70256ad8 748{
c434dee6 749 struct elf_link_hash_entry elf;
70256ad8 750
c434dee6 751 /* Track dynamic relocs copied for this symbol. */
e03a8ed8 752 struct elf_dyn_relocs *dyn_relocs;
bffbf940
JJ
753
754#define GOT_UNKNOWN 0
755#define GOT_NORMAL 1
756#define GOT_TLS_GD 2
757#define GOT_TLS_IE 3
67a4f2b7
AO
758#define GOT_TLS_GDESC 4
759#define GOT_TLS_GD_BOTH_P(type) \
760 ((type) == (GOT_TLS_GD | GOT_TLS_GDESC))
761#define GOT_TLS_GD_P(type) \
762 ((type) == GOT_TLS_GD || GOT_TLS_GD_BOTH_P (type))
763#define GOT_TLS_GDESC_P(type) \
764 ((type) == GOT_TLS_GDESC || GOT_TLS_GD_BOTH_P (type))
765#define GOT_TLS_GD_ANY_P(type) \
766 (GOT_TLS_GD_P (type) || GOT_TLS_GDESC_P (type))
bffbf940 767 unsigned char tls_type;
67a4f2b7 768
bc696fd5
L
769 /* TRUE if a weak symbol with a real definition needs a copy reloc.
770 When there is a weak symbol with a real definition, the processor
771 independent code will have arranged for us to see the real
772 definition first. We need to copy the needs_copy bit from the
773 real definition and check it when allowing copy reloc in PIE. */
774 unsigned int needs_copy : 1;
775
0ff2b86e 776 /* TRUE if symbol has at least one BND relocation. */
bc696fd5 777 unsigned int has_bnd_reloc : 1;
0ff2b86e 778
04ebc307
L
779 /* Reference count of C/C++ function pointer relocations in read-write
780 section which can be resolved at run-time. */
781 bfd_signed_vma func_pointer_refcount;
782
dd7e64d4
L
783 /* Information about the GOT PLT entry. Filled when there are both
784 GOT and PLT relocations against the same function. */
785 union gotplt_union plt_got;
786
0ff2b86e
L
787 /* Information about the second PLT entry. Filled when has_bnd_reloc is
788 set. */
789 union gotplt_union plt_bnd;
790
67a4f2b7
AO
791 /* Offset of the GOTPLT entry reserved for the TLS descriptor,
792 starting at the end of the jump table. */
793 bfd_vma tlsdesc_got;
bffbf940
JJ
794};
795
351f65ca
L
796#define elf_x86_64_hash_entry(ent) \
797 ((struct elf_x86_64_link_hash_entry *)(ent))
bffbf940 798
351f65ca 799struct elf_x86_64_obj_tdata
bffbf940
JJ
800{
801 struct elf_obj_tdata root;
802
803 /* tls_type for each local got entry. */
804 char *local_got_tls_type;
67a4f2b7
AO
805
806 /* GOTPLT entries for TLS descriptors. */
807 bfd_vma *local_tlsdesc_gotent;
70256ad8
AJ
808};
809
351f65ca
L
810#define elf_x86_64_tdata(abfd) \
811 ((struct elf_x86_64_obj_tdata *) (abfd)->tdata.any)
bffbf940 812
351f65ca
L
813#define elf_x86_64_local_got_tls_type(abfd) \
814 (elf_x86_64_tdata (abfd)->local_got_tls_type)
bffbf940 815
351f65ca
L
816#define elf_x86_64_local_tlsdesc_gotent(abfd) \
817 (elf_x86_64_tdata (abfd)->local_tlsdesc_gotent)
bffbf940 818
0ffa91dd
NC
819#define is_x86_64_elf(bfd) \
820 (bfd_get_flavour (bfd) == bfd_target_elf_flavour \
821 && elf_tdata (bfd) != NULL \
4dfe6ac6 822 && elf_object_id (bfd) == X86_64_ELF_DATA)
0ffa91dd
NC
823
824static bfd_boolean
351f65ca 825elf_x86_64_mkobject (bfd *abfd)
0ffa91dd 826{
351f65ca 827 return bfd_elf_allocate_object (abfd, sizeof (struct elf_x86_64_obj_tdata),
4dfe6ac6 828 X86_64_ELF_DATA);
0ffa91dd
NC
829}
830
c434dee6 831/* x86-64 ELF linker hash table. */
8d88c4ca 832
351f65ca 833struct elf_x86_64_link_hash_table
407443a3 834{
c434dee6 835 struct elf_link_hash_table elf;
70256ad8 836
c434dee6 837 /* Short-cuts to get to dynamic linker sections. */
c434dee6
AJ
838 asection *sdynbss;
839 asection *srelbss;
e41b3a13 840 asection *plt_eh_frame;
0ff2b86e 841 asection *plt_bnd;
dd7e64d4 842 asection *plt_got;
70256ad8 843
4dfe6ac6
NC
844 union
845 {
bffbf940
JJ
846 bfd_signed_vma refcount;
847 bfd_vma offset;
848 } tls_ld_got;
849
67a4f2b7
AO
850 /* The amount of space used by the jump slots in the GOT. */
851 bfd_vma sgotplt_jump_table_size;
852
87d72d41
AM
853 /* Small local sym cache. */
854 struct sym_cache sym_cache;
9f03412a 855
351f65ca
L
856 bfd_vma (*r_info) (bfd_vma, bfd_vma);
857 bfd_vma (*r_sym) (bfd_vma);
248775ba 858 unsigned int pointer_r_type;
351f65ca
L
859 const char *dynamic_interpreter;
860 int dynamic_interpreter_size;
861
9f03412a
AO
862 /* _TLS_MODULE_BASE_ symbol. */
863 struct bfd_link_hash_entry *tls_module_base;
c25bc9fc
L
864
865 /* Used by local STT_GNU_IFUNC symbols. */
866 htab_t loc_hash_table;
4dfe6ac6
NC
867 void * loc_hash_memory;
868
869 /* The offset into splt of the PLT entry for the TLS descriptor
870 resolver. Special values are 0, if not necessary (or not found
871 to be necessary yet), and -1 if needed but not determined
872 yet. */
873 bfd_vma tlsdesc_plt;
874 /* The offset into sgot of the GOT entry used by the PLT entry
875 above. */
876 bfd_vma tlsdesc_got;
e1f98742
L
877
878 /* The index of the next R_X86_64_JUMP_SLOT entry in .rela.plt. */
879 bfd_vma next_jump_slot_index;
880 /* The index of the next R_X86_64_IRELATIVE entry in .rela.plt. */
881 bfd_vma next_irelative_index;
c434dee6 882};
70256ad8
AJ
883
884/* Get the x86-64 ELF linker hash table from a link_info structure. */
8d88c4ca 885
351f65ca 886#define elf_x86_64_hash_table(p) \
4dfe6ac6 887 (elf_hash_table_id ((struct elf_link_hash_table *) ((p)->hash)) \
351f65ca 888 == X86_64_ELF_DATA ? ((struct elf_x86_64_link_hash_table *) ((p)->hash)) : NULL)
8d88c4ca 889
351f65ca 890#define elf_x86_64_compute_jump_table_size(htab) \
6de2ae4a 891 ((htab)->elf.srelplt->reloc_count * GOT_ENTRY_SIZE)
67a4f2b7 892
407443a3 893/* Create an entry in an x86-64 ELF linker hash table. */
70256ad8
AJ
894
895static struct bfd_hash_entry *
351f65ca
L
896elf_x86_64_link_hash_newfunc (struct bfd_hash_entry *entry,
897 struct bfd_hash_table *table,
898 const char *string)
70256ad8 899{
70256ad8 900 /* Allocate the structure if it has not already been allocated by a
c434dee6
AJ
901 subclass. */
902 if (entry == NULL)
903 {
a50b1753 904 entry = (struct bfd_hash_entry *)
eed180f8
RM
905 bfd_hash_allocate (table,
906 sizeof (struct elf_x86_64_link_hash_entry));
c434dee6
AJ
907 if (entry == NULL)
908 return entry;
909 }
70256ad8
AJ
910
911 /* Call the allocation method of the superclass. */
c434dee6
AJ
912 entry = _bfd_elf_link_hash_newfunc (entry, table, string);
913 if (entry != NULL)
70256ad8 914 {
351f65ca 915 struct elf_x86_64_link_hash_entry *eh;
c434dee6 916
351f65ca 917 eh = (struct elf_x86_64_link_hash_entry *) entry;
c434dee6 918 eh->dyn_relocs = NULL;
bffbf940 919 eh->tls_type = GOT_UNKNOWN;
bc696fd5
L
920 eh->needs_copy = 0;
921 eh->has_bnd_reloc = 0;
04ebc307 922 eh->func_pointer_refcount = 0;
0ff2b86e 923 eh->plt_bnd.offset = (bfd_vma) -1;
dd7e64d4 924 eh->plt_got.offset = (bfd_vma) -1;
67a4f2b7 925 eh->tlsdesc_got = (bfd_vma) -1;
70256ad8
AJ
926 }
927
c434dee6 928 return entry;
70256ad8
AJ
929}
930
c25bc9fc
L
931/* Compute a hash of a local hash entry. We use elf_link_hash_entry
932 for local symbol so that we can handle local STT_GNU_IFUNC symbols
933 as global symbol. We reuse indx and dynstr_index for local symbol
934 hash since they aren't used by global symbols in this backend. */
935
936static hashval_t
351f65ca 937elf_x86_64_local_htab_hash (const void *ptr)
c25bc9fc
L
938{
939 struct elf_link_hash_entry *h
940 = (struct elf_link_hash_entry *) ptr;
d2149d72 941 return ELF_LOCAL_SYMBOL_HASH (h->indx, h->dynstr_index);
c25bc9fc
L
942}
943
944/* Compare local hash entries. */
945
946static int
351f65ca 947elf_x86_64_local_htab_eq (const void *ptr1, const void *ptr2)
c25bc9fc
L
948{
949 struct elf_link_hash_entry *h1
950 = (struct elf_link_hash_entry *) ptr1;
951 struct elf_link_hash_entry *h2
952 = (struct elf_link_hash_entry *) ptr2;
953
954 return h1->indx == h2->indx && h1->dynstr_index == h2->dynstr_index;
955}
956
957/* Find and/or create a hash entry for local symbol. */
958
959static struct elf_link_hash_entry *
351f65ca
L
960elf_x86_64_get_local_sym_hash (struct elf_x86_64_link_hash_table *htab,
961 bfd *abfd, const Elf_Internal_Rela *rel,
962 bfd_boolean create)
c25bc9fc 963{
351f65ca 964 struct elf_x86_64_link_hash_entry e, *ret;
c25bc9fc 965 asection *sec = abfd->sections;
d2149d72 966 hashval_t h = ELF_LOCAL_SYMBOL_HASH (sec->id,
351f65ca 967 htab->r_sym (rel->r_info));
c25bc9fc
L
968 void **slot;
969
970 e.elf.indx = sec->id;
351f65ca 971 e.elf.dynstr_index = htab->r_sym (rel->r_info);
c25bc9fc
L
972 slot = htab_find_slot_with_hash (htab->loc_hash_table, &e, h,
973 create ? INSERT : NO_INSERT);
974
975 if (!slot)
976 return NULL;
977
978 if (*slot)
979 {
351f65ca 980 ret = (struct elf_x86_64_link_hash_entry *) *slot;
c25bc9fc
L
981 return &ret->elf;
982 }
983
351f65ca 984 ret = (struct elf_x86_64_link_hash_entry *)
c25bc9fc 985 objalloc_alloc ((struct objalloc *) htab->loc_hash_memory,
351f65ca 986 sizeof (struct elf_x86_64_link_hash_entry));
c25bc9fc
L
987 if (ret)
988 {
989 memset (ret, 0, sizeof (*ret));
990 ret->elf.indx = sec->id;
351f65ca 991 ret->elf.dynstr_index = htab->r_sym (rel->r_info);
c25bc9fc 992 ret->elf.dynindx = -1;
04ebc307 993 ret->func_pointer_refcount = 0;
dd7e64d4 994 ret->plt_got.offset = (bfd_vma) -1;
c25bc9fc
L
995 *slot = ret;
996 }
997 return &ret->elf;
998}
999
68faa637
AM
1000/* Destroy an X86-64 ELF linker hash table. */
1001
1002static void
d495ab0d 1003elf_x86_64_link_hash_table_free (bfd *obfd)
68faa637
AM
1004{
1005 struct elf_x86_64_link_hash_table *htab
d495ab0d 1006 = (struct elf_x86_64_link_hash_table *) obfd->link.hash;
68faa637
AM
1007
1008 if (htab->loc_hash_table)
1009 htab_delete (htab->loc_hash_table);
1010 if (htab->loc_hash_memory)
1011 objalloc_free ((struct objalloc *) htab->loc_hash_memory);
d495ab0d 1012 _bfd_elf_link_hash_table_free (obfd);
68faa637
AM
1013}
1014
8d88c4ca
NC
1015/* Create an X86-64 ELF linker hash table. */
1016
1017static struct bfd_link_hash_table *
351f65ca 1018elf_x86_64_link_hash_table_create (bfd *abfd)
8d88c4ca 1019{
351f65ca
L
1020 struct elf_x86_64_link_hash_table *ret;
1021 bfd_size_type amt = sizeof (struct elf_x86_64_link_hash_table);
8d88c4ca 1022
7bf52ea2 1023 ret = (struct elf_x86_64_link_hash_table *) bfd_zmalloc (amt);
c434dee6 1024 if (ret == NULL)
8d88c4ca
NC
1025 return NULL;
1026
eb4ff4d6 1027 if (!_bfd_elf_link_hash_table_init (&ret->elf, abfd,
351f65ca
L
1028 elf_x86_64_link_hash_newfunc,
1029 sizeof (struct elf_x86_64_link_hash_entry),
4dfe6ac6 1030 X86_64_ELF_DATA))
8d88c4ca 1031 {
e2d34d7d 1032 free (ret);
8d88c4ca
NC
1033 return NULL;
1034 }
1035
351f65ca
L
1036 if (ABI_64_P (abfd))
1037 {
1038 ret->r_info = elf64_r_info;
1039 ret->r_sym = elf64_r_sym;
248775ba 1040 ret->pointer_r_type = R_X86_64_64;
351f65ca
L
1041 ret->dynamic_interpreter = ELF64_DYNAMIC_INTERPRETER;
1042 ret->dynamic_interpreter_size = sizeof ELF64_DYNAMIC_INTERPRETER;
1043 }
1044 else
1045 {
1046 ret->r_info = elf32_r_info;
1047 ret->r_sym = elf32_r_sym;
248775ba 1048 ret->pointer_r_type = R_X86_64_32;
351f65ca
L
1049 ret->dynamic_interpreter = ELF32_DYNAMIC_INTERPRETER;
1050 ret->dynamic_interpreter_size = sizeof ELF32_DYNAMIC_INTERPRETER;
1051 }
1052
c25bc9fc 1053 ret->loc_hash_table = htab_try_create (1024,
351f65ca
L
1054 elf_x86_64_local_htab_hash,
1055 elf_x86_64_local_htab_eq,
c25bc9fc
L
1056 NULL);
1057 ret->loc_hash_memory = objalloc_create ();
1058 if (!ret->loc_hash_table || !ret->loc_hash_memory)
1059 {
d495ab0d 1060 elf_x86_64_link_hash_table_free (abfd);
c25bc9fc
L
1061 return NULL;
1062 }
d495ab0d 1063 ret->elf.root.hash_table_free = elf_x86_64_link_hash_table_free;
c25bc9fc 1064
c434dee6
AJ
1065 return &ret->elf.root;
1066}
1067
c434dee6
AJ
1068/* Create .plt, .rela.plt, .got, .got.plt, .rela.got, .dynbss, and
1069 .rela.bss sections in DYNOBJ, and set up shortcuts to them in our
1070 hash table. */
1071
b34976b6 1072static bfd_boolean
351f65ca
L
1073elf_x86_64_create_dynamic_sections (bfd *dynobj,
1074 struct bfd_link_info *info)
c434dee6 1075{
351f65ca 1076 struct elf_x86_64_link_hash_table *htab;
c434dee6 1077
c434dee6 1078 if (!_bfd_elf_create_dynamic_sections (dynobj, info))
b34976b6 1079 return FALSE;
c434dee6 1080
351f65ca 1081 htab = elf_x86_64_hash_table (info);
4dfe6ac6
NC
1082 if (htab == NULL)
1083 return FALSE;
1084
3d4d4302 1085 htab->sdynbss = bfd_get_linker_section (dynobj, ".dynbss");
9a926d55 1086 if (!htab->sdynbss)
c434dee6
AJ
1087 abort ();
1088
0e1862bb 1089 if (bfd_link_executable (info))
9a926d55
L
1090 {
1091 /* Always allow copy relocs for building executables. */
9d157cb9 1092 asection *s = bfd_get_linker_section (dynobj, ".rela.bss");
9a926d55
L
1093 if (s == NULL)
1094 {
1095 const struct elf_backend_data *bed = get_elf_backend_data (dynobj);
1096 s = bfd_make_section_anyway_with_flags (dynobj,
1097 ".rela.bss",
1098 (bed->dynamic_sec_flags
1099 | SEC_READONLY));
1100 if (s == NULL
1101 || ! bfd_set_section_alignment (dynobj, s,
1102 bed->s->log_file_align))
1103 return FALSE;
1104 }
1105 htab->srelbss = s;
1106 }
1107
e41b3a13 1108 if (!info->no_ld_generated_unwind_info
2fe0fd06 1109 && htab->plt_eh_frame == NULL
e4de50d4 1110 && htab->elf.splt != NULL)
e41b3a13 1111 {
bbf96e4e
L
1112 flagword flags = (SEC_ALLOC | SEC_LOAD | SEC_READONLY
1113 | SEC_HAS_CONTENTS | SEC_IN_MEMORY
1114 | SEC_LINKER_CREATED);
e41b3a13 1115 htab->plt_eh_frame
bbf96e4e 1116 = bfd_make_section_anyway_with_flags (dynobj, ".eh_frame", flags);
e41b3a13
JJ
1117 if (htab->plt_eh_frame == NULL
1118 || !bfd_set_section_alignment (dynobj, htab->plt_eh_frame, 3))
1119 return FALSE;
e41b3a13 1120 }
b34976b6 1121 return TRUE;
c434dee6
AJ
1122}
1123
1124/* Copy the extra info we tack onto an elf_link_hash_entry. */
1125
1126static void
351f65ca
L
1127elf_x86_64_copy_indirect_symbol (struct bfd_link_info *info,
1128 struct elf_link_hash_entry *dir,
1129 struct elf_link_hash_entry *ind)
c434dee6 1130{
351f65ca 1131 struct elf_x86_64_link_hash_entry *edir, *eind;
c434dee6 1132
351f65ca
L
1133 edir = (struct elf_x86_64_link_hash_entry *) dir;
1134 eind = (struct elf_x86_64_link_hash_entry *) ind;
c434dee6 1135
0ff2b86e
L
1136 if (!edir->has_bnd_reloc)
1137 edir->has_bnd_reloc = eind->has_bnd_reloc;
1138
c434dee6
AJ
1139 if (eind->dyn_relocs != NULL)
1140 {
1141 if (edir->dyn_relocs != NULL)
1142 {
e03a8ed8
L
1143 struct elf_dyn_relocs **pp;
1144 struct elf_dyn_relocs *p;
c434dee6 1145
fcfa13d2 1146 /* Add reloc counts against the indirect sym to the direct sym
c434dee6
AJ
1147 list. Merge any entries against the same section. */
1148 for (pp = &eind->dyn_relocs; (p = *pp) != NULL; )
1149 {
e03a8ed8 1150 struct elf_dyn_relocs *q;
c434dee6
AJ
1151
1152 for (q = edir->dyn_relocs; q != NULL; q = q->next)
1153 if (q->sec == p->sec)
1154 {
1155 q->pc_count += p->pc_count;
1156 q->count += p->count;
1157 *pp = p->next;
1158 break;
1159 }
1160 if (q == NULL)
1161 pp = &p->next;
1162 }
1163 *pp = edir->dyn_relocs;
1164 }
1165
1166 edir->dyn_relocs = eind->dyn_relocs;
1167 eind->dyn_relocs = NULL;
1168 }
1169
bffbf940
JJ
1170 if (ind->root.type == bfd_link_hash_indirect
1171 && dir->got.refcount <= 0)
1172 {
1173 edir->tls_type = eind->tls_type;
1174 eind->tls_type = GOT_UNKNOWN;
1175 }
1176
d40d037c
AJ
1177 if (ELIMINATE_COPY_RELOCS
1178 && ind->root.type != bfd_link_hash_indirect
f5385ebf
AM
1179 && dir->dynamic_adjusted)
1180 {
1181 /* If called to transfer flags for a weakdef during processing
1182 of elf_adjust_dynamic_symbol, don't copy non_got_ref.
1183 We clear it ourselves for ELIMINATE_COPY_RELOCS. */
1184 dir->ref_dynamic |= ind->ref_dynamic;
1185 dir->ref_regular |= ind->ref_regular;
1186 dir->ref_regular_nonweak |= ind->ref_regular_nonweak;
1187 dir->needs_plt |= ind->needs_plt;
1188 dir->pointer_equality_needed |= ind->pointer_equality_needed;
1189 }
d40d037c 1190 else
04ebc307
L
1191 {
1192 if (eind->func_pointer_refcount > 0)
1193 {
1194 edir->func_pointer_refcount += eind->func_pointer_refcount;
1195 eind->func_pointer_refcount = 0;
1196 }
1197
1198 _bfd_elf_link_hash_copy_indirect (info, dir, ind);
1199 }
8d88c4ca
NC
1200}
1201
b34976b6 1202static bfd_boolean
27482721 1203elf64_x86_64_elf_object_p (bfd *abfd)
bffbf940 1204{
8d88c4ca
NC
1205 /* Set the right machine number for an x86-64 elf64 file. */
1206 bfd_default_set_arch_mach (abfd, bfd_arch_i386, bfd_mach_x86_64);
b34976b6 1207 return TRUE;
8d88c4ca
NC
1208}
1209
8059fb19
RM
1210static bfd_boolean
1211elf32_x86_64_elf_object_p (bfd *abfd)
1212{
1213 /* Set the right machine number for an x86-64 elf32 file. */
1214 bfd_default_set_arch_mach (abfd, bfd_arch_i386, bfd_mach_x64_32);
1215 return TRUE;
1216}
1217
142411ca
L
1218/* Return TRUE if the TLS access code sequence support transition
1219 from R_TYPE. */
1220
1221static bfd_boolean
351f65ca
L
1222elf_x86_64_check_tls_transition (bfd *abfd,
1223 struct bfd_link_info *info,
1224 asection *sec,
1225 bfd_byte *contents,
1226 Elf_Internal_Shdr *symtab_hdr,
1227 struct elf_link_hash_entry **sym_hashes,
1228 unsigned int r_type,
1229 const Elf_Internal_Rela *rel,
1230 const Elf_Internal_Rela *relend)
bffbf940 1231{
142411ca
L
1232 unsigned int val;
1233 unsigned long r_symndx;
5c98a14e 1234 bfd_boolean largepic = FALSE;
142411ca
L
1235 struct elf_link_hash_entry *h;
1236 bfd_vma offset;
351f65ca 1237 struct elf_x86_64_link_hash_table *htab;
142411ca
L
1238
1239 /* Get the section contents. */
1240 if (contents == NULL)
1241 {
1242 if (elf_section_data (sec)->this_hdr.contents != NULL)
1243 contents = elf_section_data (sec)->this_hdr.contents;
1244 else
1245 {
1246 /* FIXME: How to better handle error condition? */
1247 if (!bfd_malloc_and_get_section (abfd, sec, &contents))
1248 return FALSE;
bffbf940 1249
142411ca
L
1250 /* Cache the section contents for elf_link_input_bfd. */
1251 elf_section_data (sec)->this_hdr.contents = contents;
1252 }
1253 }
1254
351f65ca 1255 htab = elf_x86_64_hash_table (info);
142411ca 1256 offset = rel->r_offset;
bffbf940 1257 switch (r_type)
142411ca
L
1258 {
1259 case R_X86_64_TLSGD:
1260 case R_X86_64_TLSLD:
1261 if ((rel + 1) >= relend)
1262 return FALSE;
1263
1264 if (r_type == R_X86_64_TLSGD)
1265 {
52bc799a 1266 /* Check transition from GD access model. For 64bit, only
142411ca
L
1267 .byte 0x66; leaq foo@tlsgd(%rip), %rdi
1268 .word 0x6666; rex64; call __tls_get_addr
52bc799a
L
1269 can transit to different access model. For 32bit, only
1270 leaq foo@tlsgd(%rip), %rdi
1271 .word 0x6666; rex64; call __tls_get_addr
5c98a14e
JJ
1272 can transit to different access model. For largepic
1273 we also support:
1274 leaq foo@tlsgd(%rip), %rdi
1275 movabsq $__tls_get_addr@pltoff, %rax
1276 addq $rbx, %rax
1277 call *%rax. */
142411ca 1278
fa289a5f
AM
1279 static const unsigned char call[] = { 0x66, 0x66, 0x48, 0xe8 };
1280 static const unsigned char leaq[] = { 0x66, 0x48, 0x8d, 0x3d };
1281
5c98a14e 1282 if ((offset + 12) > sec->size)
142411ca 1283 return FALSE;
52bc799a 1284
5c98a14e
JJ
1285 if (memcmp (contents + offset + 4, call, 4) != 0)
1286 {
1287 if (!ABI_64_P (abfd)
1288 || (offset + 19) > sec->size
1289 || offset < 3
1290 || memcmp (contents + offset - 3, leaq + 1, 3) != 0
1291 || memcmp (contents + offset + 4, "\x48\xb8", 2) != 0
1292 || memcmp (contents + offset + 14, "\x48\x01\xd8\xff\xd0", 5)
1293 != 0)
1294 return FALSE;
1295 largepic = TRUE;
1296 }
1297 else if (ABI_64_P (abfd))
52bc799a 1298 {
52bc799a 1299 if (offset < 4
fa289a5f 1300 || memcmp (contents + offset - 4, leaq, 4) != 0)
52bc799a
L
1301 return FALSE;
1302 }
1303 else
1304 {
52bc799a 1305 if (offset < 3
fa289a5f 1306 || memcmp (contents + offset - 3, leaq + 1, 3) != 0)
52bc799a
L
1307 return FALSE;
1308 }
142411ca
L
1309 }
1310 else
1311 {
1312 /* Check transition from LD access model. Only
1313 leaq foo@tlsld(%rip), %rdi;
1314 call __tls_get_addr
5c98a14e
JJ
1315 can transit to different access model. For largepic
1316 we also support:
1317 leaq foo@tlsld(%rip), %rdi
1318 movabsq $__tls_get_addr@pltoff, %rax
1319 addq $rbx, %rax
1320 call *%rax. */
142411ca 1321
fa289a5f 1322 static const unsigned char lea[] = { 0x48, 0x8d, 0x3d };
142411ca
L
1323
1324 if (offset < 3 || (offset + 9) > sec->size)
1325 return FALSE;
1326
5c98a14e 1327 if (memcmp (contents + offset - 3, lea, 3) != 0)
142411ca 1328 return FALSE;
5c98a14e
JJ
1329
1330 if (0xe8 != *(contents + offset + 4))
1331 {
1332 if (!ABI_64_P (abfd)
1333 || (offset + 19) > sec->size
1334 || memcmp (contents + offset + 4, "\x48\xb8", 2) != 0
1335 || memcmp (contents + offset + 14, "\x48\x01\xd8\xff\xd0", 5)
1336 != 0)
1337 return FALSE;
1338 largepic = TRUE;
1339 }
142411ca
L
1340 }
1341
351f65ca 1342 r_symndx = htab->r_sym (rel[1].r_info);
142411ca
L
1343 if (r_symndx < symtab_hdr->sh_info)
1344 return FALSE;
1345
1346 h = sym_hashes[r_symndx - symtab_hdr->sh_info];
c4fb387b 1347 /* Use strncmp to check __tls_get_addr since __tls_get_addr
eed180f8 1348 may be versioned. */
142411ca
L
1349 return (h != NULL
1350 && h->root.root.string != NULL
5c98a14e
JJ
1351 && (largepic
1352 ? ELF32_R_TYPE (rel[1].r_info) == R_X86_64_PLTOFF64
1353 : (ELF32_R_TYPE (rel[1].r_info) == R_X86_64_PC32
1354 || ELF32_R_TYPE (rel[1].r_info) == R_X86_64_PLT32))
c4fb387b
L
1355 && (strncmp (h->root.root.string,
1356 "__tls_get_addr", 14) == 0));
142411ca
L
1357
1358 case R_X86_64_GOTTPOFF:
1359 /* Check transition from IE access model:
4a4c5f25
L
1360 mov foo@gottpoff(%rip), %reg
1361 add foo@gottpoff(%rip), %reg
142411ca
L
1362 */
1363
4a4c5f25
L
1364 /* Check REX prefix first. */
1365 if (offset >= 3 && (offset + 4) <= sec->size)
1366 {
1367 val = bfd_get_8 (abfd, contents + offset - 3);
1368 if (val != 0x48 && val != 0x4c)
1369 {
1370 /* X32 may have 0x44 REX prefix or no REX prefix. */
1371 if (ABI_64_P (abfd))
1372 return FALSE;
1373 }
1374 }
1375 else
1376 {
1377 /* X32 may not have any REX prefix. */
1378 if (ABI_64_P (abfd))
1379 return FALSE;
1380 if (offset < 2 || (offset + 3) > sec->size)
1381 return FALSE;
1382 }
142411ca
L
1383
1384 val = bfd_get_8 (abfd, contents + offset - 2);
1385 if (val != 0x8b && val != 0x03)
1386 return FALSE;
1387
1388 val = bfd_get_8 (abfd, contents + offset - 1);
1389 return (val & 0xc7) == 5;
1390
1391 case R_X86_64_GOTPC32_TLSDESC:
1392 /* Check transition from GDesc access model:
1393 leaq x@tlsdesc(%rip), %rax
1394
1395 Make sure it's a leaq adding rip to a 32-bit offset
1396 into any register, although it's probably almost always
1397 going to be rax. */
1398
1399 if (offset < 3 || (offset + 4) > sec->size)
1400 return FALSE;
1401
1402 val = bfd_get_8 (abfd, contents + offset - 3);
1403 if ((val & 0xfb) != 0x48)
1404 return FALSE;
1405
1406 if (bfd_get_8 (abfd, contents + offset - 2) != 0x8d)
1407 return FALSE;
1408
1409 val = bfd_get_8 (abfd, contents + offset - 1);
1410 return (val & 0xc7) == 0x05;
1411
1412 case R_X86_64_TLSDESC_CALL:
1413 /* Check transition from GDesc access model:
1414 call *x@tlsdesc(%rax)
1415 */
1416 if (offset + 2 <= sec->size)
1417 {
1418 /* Make sure that it's a call *x@tlsdesc(%rax). */
fa289a5f
AM
1419 static const unsigned char call[] = { 0xff, 0x10 };
1420 return memcmp (contents + offset, call, 2) == 0;
142411ca
L
1421 }
1422
1423 return FALSE;
1424
1425 default:
1426 abort ();
1427 }
1428}
1429
1430/* Return TRUE if the TLS access transition is OK or no transition
1431 will be performed. Update R_TYPE if there is a transition. */
1432
1433static bfd_boolean
351f65ca
L
1434elf_x86_64_tls_transition (struct bfd_link_info *info, bfd *abfd,
1435 asection *sec, bfd_byte *contents,
1436 Elf_Internal_Shdr *symtab_hdr,
1437 struct elf_link_hash_entry **sym_hashes,
1438 unsigned int *r_type, int tls_type,
1439 const Elf_Internal_Rela *rel,
1440 const Elf_Internal_Rela *relend,
1441 struct elf_link_hash_entry *h,
1442 unsigned long r_symndx)
142411ca
L
1443{
1444 unsigned int from_type = *r_type;
1445 unsigned int to_type = from_type;
1446 bfd_boolean check = TRUE;
1447
bb1cb422
L
1448 /* Skip TLS transition for functions. */
1449 if (h != NULL
1450 && (h->type == STT_FUNC
1451 || h->type == STT_GNU_IFUNC))
1452 return TRUE;
1453
142411ca 1454 switch (from_type)
bffbf940
JJ
1455 {
1456 case R_X86_64_TLSGD:
67a4f2b7
AO
1457 case R_X86_64_GOTPC32_TLSDESC:
1458 case R_X86_64_TLSDESC_CALL:
bffbf940 1459 case R_X86_64_GOTTPOFF:
0e1862bb 1460 if (bfd_link_executable (info))
142411ca
L
1461 {
1462 if (h == NULL)
1463 to_type = R_X86_64_TPOFF32;
1464 else
1465 to_type = R_X86_64_GOTTPOFF;
1466 }
1467
351f65ca 1468 /* When we are called from elf_x86_64_relocate_section,
142411ca
L
1469 CONTENTS isn't NULL and there may be additional transitions
1470 based on TLS_TYPE. */
1471 if (contents != NULL)
1472 {
1473 unsigned int new_to_type = to_type;
1474
0e1862bb 1475 if (bfd_link_executable (info)
142411ca
L
1476 && h != NULL
1477 && h->dynindx == -1
1478 && tls_type == GOT_TLS_IE)
1479 new_to_type = R_X86_64_TPOFF32;
1480
1481 if (to_type == R_X86_64_TLSGD
1482 || to_type == R_X86_64_GOTPC32_TLSDESC
1483 || to_type == R_X86_64_TLSDESC_CALL)
1484 {
1485 if (tls_type == GOT_TLS_IE)
1486 new_to_type = R_X86_64_GOTTPOFF;
1487 }
1488
1489 /* We checked the transition before when we were called from
351f65ca 1490 elf_x86_64_check_relocs. We only want to check the new
142411ca
L
1491 transition which hasn't been checked before. */
1492 check = new_to_type != to_type && from_type == to_type;
1493 to_type = new_to_type;
1494 }
1495
1496 break;
1497
bffbf940 1498 case R_X86_64_TLSLD:
0e1862bb 1499 if (bfd_link_executable (info))
142411ca
L
1500 to_type = R_X86_64_TPOFF32;
1501 break;
1502
1503 default:
1504 return TRUE;
bffbf940
JJ
1505 }
1506
142411ca
L
1507 /* Return TRUE if there is no transition. */
1508 if (from_type == to_type)
1509 return TRUE;
1510
1511 /* Check if the transition can be performed. */
1512 if (check
351f65ca
L
1513 && ! elf_x86_64_check_tls_transition (abfd, info, sec, contents,
1514 symtab_hdr, sym_hashes,
1515 from_type, rel, relend))
142411ca 1516 {
2f629d23 1517 reloc_howto_type *from, *to;
4c544807 1518 const char *name;
142411ca 1519
351f65ca
L
1520 from = elf_x86_64_rtype_to_howto (abfd, from_type);
1521 to = elf_x86_64_rtype_to_howto (abfd, to_type);
142411ca 1522
4c544807
L
1523 if (h)
1524 name = h->root.root.string;
1525 else
1526 {
351f65ca 1527 struct elf_x86_64_link_hash_table *htab;
4dfe6ac6 1528
351f65ca 1529 htab = elf_x86_64_hash_table (info);
4dfe6ac6
NC
1530 if (htab == NULL)
1531 name = "*unknown*";
1532 else
1533 {
1534 Elf_Internal_Sym *isym;
1535
1536 isym = bfd_sym_from_r_symndx (&htab->sym_cache,
1537 abfd, r_symndx);
1538 name = bfd_elf_sym_name (abfd, symtab_hdr, isym, NULL);
1539 }
4c544807
L
1540 }
1541
142411ca
L
1542 (*_bfd_error_handler)
1543 (_("%B: TLS transition from %s to %s against `%s' at 0x%lx "
1544 "in section `%A' failed"),
4c544807 1545 abfd, sec, from->name, to->name, name,
142411ca
L
1546 (unsigned long) rel->r_offset);
1547 bfd_set_error (bfd_error_bad_value);
1548 return FALSE;
1549 }
1550
1551 *r_type = to_type;
1552 return TRUE;
bffbf940
JJ
1553}
1554
c1d11331
L
1555/* Rename some of the generic section flags to better document how they
1556 are used here. */
56ceb5b5 1557#define need_convert_load sec_flg0
c1d11331 1558
70256ad8 1559/* Look through the relocs for a section during the first phase, and
c434dee6
AJ
1560 calculate needed space in the global offset table, procedure
1561 linkage table, and dynamic reloc sections. */
70256ad8 1562
b34976b6 1563static bfd_boolean
351f65ca
L
1564elf_x86_64_check_relocs (bfd *abfd, struct bfd_link_info *info,
1565 asection *sec,
1566 const Elf_Internal_Rela *relocs)
70256ad8 1567{
351f65ca 1568 struct elf_x86_64_link_hash_table *htab;
70256ad8
AJ
1569 Elf_Internal_Shdr *symtab_hdr;
1570 struct elf_link_hash_entry **sym_hashes;
70256ad8
AJ
1571 const Elf_Internal_Rela *rel;
1572 const Elf_Internal_Rela *rel_end;
70256ad8 1573 asection *sreloc;
dd7e64d4 1574 bfd_boolean use_plt_got;
70256ad8 1575
0e1862bb 1576 if (bfd_link_relocatable (info))
b34976b6 1577 return TRUE;
70256ad8 1578
0ffa91dd
NC
1579 BFD_ASSERT (is_x86_64_elf (abfd));
1580
351f65ca 1581 htab = elf_x86_64_hash_table (info);
4dfe6ac6
NC
1582 if (htab == NULL)
1583 return FALSE;
1584
dd7e64d4
L
1585 use_plt_got = get_elf_x86_64_backend_data (abfd) == &elf_x86_64_arch_bed;
1586
0ffa91dd 1587 symtab_hdr = &elf_symtab_hdr (abfd);
70256ad8 1588 sym_hashes = elf_sym_hashes (abfd);
70256ad8 1589
c434dee6 1590 sreloc = NULL;
cbe950e9 1591
70256ad8
AJ
1592 rel_end = relocs + sec->reloc_count;
1593 for (rel = relocs; rel < rel_end; rel++)
1594 {
bffbf940 1595 unsigned int r_type;
70256ad8
AJ
1596 unsigned long r_symndx;
1597 struct elf_link_hash_entry *h;
4c544807
L
1598 Elf_Internal_Sym *isym;
1599 const char *name;
06a6a421 1600 bfd_boolean size_reloc;
70256ad8 1601
351f65ca
L
1602 r_symndx = htab->r_sym (rel->r_info);
1603 r_type = ELF32_R_TYPE (rel->r_info);
c434dee6
AJ
1604
1605 if (r_symndx >= NUM_SHDR_ENTRIES (symtab_hdr))
1606 {
d003868e
AM
1607 (*_bfd_error_handler) (_("%B: bad symbol index: %d"),
1608 abfd, r_symndx);
b34976b6 1609 return FALSE;
c434dee6
AJ
1610 }
1611
70256ad8 1612 if (r_symndx < symtab_hdr->sh_info)
c25bc9fc
L
1613 {
1614 /* A local symbol. */
c2e61a4e
L
1615 isym = bfd_sym_from_r_symndx (&htab->sym_cache,
1616 abfd, r_symndx);
1617 if (isym == NULL)
1618 return FALSE;
c25bc9fc
L
1619
1620 /* Check relocation against local STT_GNU_IFUNC symbol. */
351f65ca 1621 if (ELF_ST_TYPE (isym->st_info) == STT_GNU_IFUNC)
c25bc9fc 1622 {
351f65ca
L
1623 h = elf_x86_64_get_local_sym_hash (htab, abfd, rel,
1624 TRUE);
c25bc9fc 1625 if (h == NULL)
c2e61a4e 1626 return FALSE;
6bbec505 1627
c25bc9fc
L
1628 /* Fake a STT_GNU_IFUNC symbol. */
1629 h->type = STT_GNU_IFUNC;
1630 h->def_regular = 1;
1631 h->ref_regular = 1;
1632 h->forced_local = 1;
1633 h->root.type = bfd_link_hash_defined;
1634 }
1635 else
1636 h = NULL;
1637 }
70256ad8 1638 else
71cb9464 1639 {
4c544807 1640 isym = NULL;
71cb9464
L
1641 h = sym_hashes[r_symndx - symtab_hdr->sh_info];
1642 while (h->root.type == bfd_link_hash_indirect
1643 || h->root.type == bfd_link_hash_warning)
1644 h = (struct elf_link_hash_entry *) h->root.u.i.link;
c25bc9fc 1645 }
cbe950e9 1646
d1534d16
L
1647 /* Check invalid x32 relocations. */
1648 if (!ABI_64_P (abfd))
1649 switch (r_type)
1650 {
1651 default:
1652 break;
1653
d1534d16
L
1654 case R_X86_64_DTPOFF64:
1655 case R_X86_64_TPOFF64:
1656 case R_X86_64_PC64:
1657 case R_X86_64_GOTOFF64:
1658 case R_X86_64_GOT64:
1659 case R_X86_64_GOTPCREL64:
1660 case R_X86_64_GOTPC64:
1661 case R_X86_64_GOTPLT64:
1662 case R_X86_64_PLTOFF64:
1663 {
1664 if (h)
1665 name = h->root.root.string;
1666 else
1667 name = bfd_elf_sym_name (abfd, symtab_hdr, isym,
1668 NULL);
1669 (*_bfd_error_handler)
1670 (_("%B: relocation %s against symbol `%s' isn't "
1671 "supported in x32 mode"), abfd,
1672 x86_64_elf_howto_table[r_type].name, name);
1673 bfd_set_error (bfd_error_bad_value);
1674 return FALSE;
1675 }
1676 break;
1677 }
1678
c25bc9fc
L
1679 if (h != NULL)
1680 {
cbe950e9
L
1681 /* Create the ifunc sections for static executables. If we
1682 never see an indirect function symbol nor we are building
1683 a static executable, those sections will be empty and
1684 won't appear in output. */
1685 switch (r_type)
1686 {
1687 default:
1688 break;
1689
0ff2b86e
L
1690 case R_X86_64_PC32_BND:
1691 case R_X86_64_PLT32_BND:
d258b828
IZ
1692 case R_X86_64_PC32:
1693 case R_X86_64_PLT32:
1694 case R_X86_64_32:
1695 case R_X86_64_64:
0ff2b86e
L
1696 /* MPX PLT is supported only if elf_x86_64_arch_bed
1697 is used in 64-bit mode. */
1698 if (ABI_64_P (abfd)
d258b828
IZ
1699 && info->bndplt
1700 && (get_elf_x86_64_backend_data (abfd)
1701 == &elf_x86_64_arch_bed))
0ff2b86e 1702 {
bc696fd5 1703 elf_x86_64_hash_entry (h)->has_bnd_reloc = 1;
0ff2b86e
L
1704
1705 /* Create the second PLT for Intel MPX support. */
1706 if (htab->plt_bnd == NULL)
1707 {
1708 unsigned int plt_bnd_align;
1709 const struct elf_backend_data *bed;
1710
1711 bed = get_elf_backend_data (info->output_bfd);
6db50b4c
L
1712 BFD_ASSERT (sizeof (elf_x86_64_bnd_plt2_entry) == 8
1713 && (sizeof (elf_x86_64_bnd_plt2_entry)
1714 == sizeof (elf_x86_64_legacy_plt2_entry)));
1715 plt_bnd_align = 3;
0ff2b86e
L
1716
1717 if (htab->elf.dynobj == NULL)
1718 htab->elf.dynobj = abfd;
1719 htab->plt_bnd
1720 = bfd_make_section_anyway_with_flags (htab->elf.dynobj,
1721 ".plt.bnd",
1722 (bed->dynamic_sec_flags
1723 | SEC_ALLOC
1724 | SEC_CODE
1725 | SEC_LOAD
1726 | SEC_READONLY));
1727 if (htab->plt_bnd == NULL
1728 || !bfd_set_section_alignment (htab->elf.dynobj,
1729 htab->plt_bnd,
1730 plt_bnd_align))
1731 return FALSE;
1732 }
1733 }
1734
cbe950e9 1735 case R_X86_64_32S:
cbe950e9 1736 case R_X86_64_PC64:
cbe950e9 1737 case R_X86_64_GOTPCREL:
56ceb5b5
L
1738 case R_X86_64_GOTPCRELX:
1739 case R_X86_64_REX_GOTPCRELX:
cbe950e9 1740 case R_X86_64_GOTPCREL64:
9d4057ee
AM
1741 if (htab->elf.dynobj == NULL)
1742 htab->elf.dynobj = abfd;
1743 if (!_bfd_elf_create_ifunc_sections (htab->elf.dynobj, info))
c2e61a4e 1744 return FALSE;
cbe950e9
L
1745 break;
1746 }
1747
ad1e85de
L
1748 /* It is referenced by a non-shared object. */
1749 h->ref_regular = 1;
61315175 1750 h->root.non_ir_ref = 1;
13a2df29
L
1751
1752 if (h->type == STT_GNU_IFUNC)
1753 elf_tdata (info->output_bfd)->has_gnu_symbols
1754 |= elf_gnu_symbol_ifunc;
71cb9464 1755 }
70256ad8 1756
351f65ca
L
1757 if (! elf_x86_64_tls_transition (info, abfd, sec, NULL,
1758 symtab_hdr, sym_hashes,
1759 &r_type, GOT_UNKNOWN,
1760 rel, rel_end, h, r_symndx))
c2e61a4e 1761 return FALSE;
142411ca 1762
bffbf940 1763 switch (r_type)
70256ad8 1764 {
bffbf940
JJ
1765 case R_X86_64_TLSLD:
1766 htab->tls_ld_got.refcount += 1;
1767 goto create_got;
1768
1769 case R_X86_64_TPOFF32:
0e1862bb 1770 if (!bfd_link_executable (info) && ABI_64_P (abfd))
70256ad8 1771 {
09a24cbf 1772 if (h)
4c544807
L
1773 name = h->root.root.string;
1774 else
1775 name = bfd_elf_sym_name (abfd, symtab_hdr, isym,
1776 NULL);
bffbf940 1777 (*_bfd_error_handler)
d003868e
AM
1778 (_("%B: relocation %s against `%s' can not be used when making a shared object; recompile with -fPIC"),
1779 abfd,
4c544807 1780 x86_64_elf_howto_table[r_type].name, name);
bffbf940 1781 bfd_set_error (bfd_error_bad_value);
c2e61a4e 1782 return FALSE;
70256ad8 1783 }
bffbf940 1784 break;
c434dee6 1785
bffbf940 1786 case R_X86_64_GOTTPOFF:
0e1862bb 1787 if (!bfd_link_executable (info))
bffbf940
JJ
1788 info->flags |= DF_STATIC_TLS;
1789 /* Fall through */
70256ad8 1790
bffbf940
JJ
1791 case R_X86_64_GOT32:
1792 case R_X86_64_GOTPCREL:
56ceb5b5
L
1793 case R_X86_64_GOTPCRELX:
1794 case R_X86_64_REX_GOTPCRELX:
bffbf940 1795 case R_X86_64_TLSGD:
7b81dfbb
AJ
1796 case R_X86_64_GOT64:
1797 case R_X86_64_GOTPCREL64:
1798 case R_X86_64_GOTPLT64:
67a4f2b7
AO
1799 case R_X86_64_GOTPC32_TLSDESC:
1800 case R_X86_64_TLSDESC_CALL:
bffbf940
JJ
1801 /* This symbol requires a global offset table entry. */
1802 {
1803 int tls_type, old_tls_type;
1804
1805 switch (r_type)
1806 {
1807 default: tls_type = GOT_NORMAL; break;
1808 case R_X86_64_TLSGD: tls_type = GOT_TLS_GD; break;
1809 case R_X86_64_GOTTPOFF: tls_type = GOT_TLS_IE; break;
67a4f2b7
AO
1810 case R_X86_64_GOTPC32_TLSDESC:
1811 case R_X86_64_TLSDESC_CALL:
1812 tls_type = GOT_TLS_GDESC; break;
bffbf940
JJ
1813 }
1814
1815 if (h != NULL)
1816 {
1817 h->got.refcount += 1;
351f65ca 1818 old_tls_type = elf_x86_64_hash_entry (h)->tls_type;
bffbf940
JJ
1819 }
1820 else
1821 {
1822 bfd_signed_vma *local_got_refcounts;
1823
1824 /* This is a global offset table entry for a local symbol. */
1825 local_got_refcounts = elf_local_got_refcounts (abfd);
1826 if (local_got_refcounts == NULL)
1827 {
1828 bfd_size_type size;
1829
1830 size = symtab_hdr->sh_info;
67a4f2b7
AO
1831 size *= sizeof (bfd_signed_vma)
1832 + sizeof (bfd_vma) + sizeof (char);
bffbf940
JJ
1833 local_got_refcounts = ((bfd_signed_vma *)
1834 bfd_zalloc (abfd, size));
1835 if (local_got_refcounts == NULL)
c2e61a4e 1836 return FALSE;
bffbf940 1837 elf_local_got_refcounts (abfd) = local_got_refcounts;
351f65ca 1838 elf_x86_64_local_tlsdesc_gotent (abfd)
67a4f2b7 1839 = (bfd_vma *) (local_got_refcounts + symtab_hdr->sh_info);
351f65ca 1840 elf_x86_64_local_got_tls_type (abfd)
67a4f2b7 1841 = (char *) (local_got_refcounts + 2 * symtab_hdr->sh_info);
bffbf940
JJ
1842 }
1843 local_got_refcounts[r_symndx] += 1;
1844 old_tls_type
351f65ca 1845 = elf_x86_64_local_got_tls_type (abfd) [r_symndx];
bffbf940
JJ
1846 }
1847
1848 /* If a TLS symbol is accessed using IE at least once,
1849 there is no point to use dynamic model for it. */
1850 if (old_tls_type != tls_type && old_tls_type != GOT_UNKNOWN
67a4f2b7
AO
1851 && (! GOT_TLS_GD_ANY_P (old_tls_type)
1852 || tls_type != GOT_TLS_IE))
bffbf940 1853 {
67a4f2b7 1854 if (old_tls_type == GOT_TLS_IE && GOT_TLS_GD_ANY_P (tls_type))
bffbf940 1855 tls_type = old_tls_type;
67a4f2b7
AO
1856 else if (GOT_TLS_GD_ANY_P (old_tls_type)
1857 && GOT_TLS_GD_ANY_P (tls_type))
1858 tls_type |= old_tls_type;
bffbf940
JJ
1859 else
1860 {
09a24cbf 1861 if (h)
4c544807
L
1862 name = h->root.root.string;
1863 else
1864 name = bfd_elf_sym_name (abfd, symtab_hdr,
1865 isym, NULL);
bffbf940 1866 (*_bfd_error_handler)
1f7a4e42 1867 (_("%B: '%s' accessed both as normal and thread local symbol"),
4c544807 1868 abfd, name);
68c4a57e 1869 bfd_set_error (bfd_error_bad_value);
c2e61a4e 1870 return FALSE;
bffbf940
JJ
1871 }
1872 }
1873
1874 if (old_tls_type != tls_type)
1875 {
1876 if (h != NULL)
351f65ca 1877 elf_x86_64_hash_entry (h)->tls_type = tls_type;
bffbf940 1878 else
351f65ca 1879 elf_x86_64_local_got_tls_type (abfd) [r_symndx] = tls_type;
bffbf940
JJ
1880 }
1881 }
c434dee6
AJ
1882 /* Fall through */
1883
d6ab8113
JB
1884 case R_X86_64_GOTOFF64:
1885 case R_X86_64_GOTPC32:
7b81dfbb 1886 case R_X86_64_GOTPC64:
bffbf940 1887 create_got:
6de2ae4a 1888 if (htab->elf.sgot == NULL)
c434dee6
AJ
1889 {
1890 if (htab->elf.dynobj == NULL)
1891 htab->elf.dynobj = abfd;
6de2ae4a
L
1892 if (!_bfd_elf_create_got_section (htab->elf.dynobj,
1893 info))
c2e61a4e 1894 return FALSE;
c434dee6 1895 }
70256ad8
AJ
1896 break;
1897
1898 case R_X86_64_PLT32:
c3320543 1899 case R_X86_64_PLT32_BND:
70256ad8 1900 /* This symbol requires a procedure linkage table entry. We
407443a3
AJ
1901 actually build the entry in adjust_dynamic_symbol,
1902 because this might be a case of linking PIC code which is
1903 never referenced by a dynamic object, in which case we
1904 don't need to generate a procedure linkage table entry
1905 after all. */
70256ad8
AJ
1906
1907 /* If this is a local symbol, we resolve it directly without
407443a3 1908 creating a procedure linkage table entry. */
70256ad8
AJ
1909 if (h == NULL)
1910 continue;
1911
f5385ebf 1912 h->needs_plt = 1;
51b64d56 1913 h->plt.refcount += 1;
70256ad8
AJ
1914 break;
1915
7b81dfbb
AJ
1916 case R_X86_64_PLTOFF64:
1917 /* This tries to form the 'address' of a function relative
1918 to GOT. For global symbols we need a PLT entry. */
1919 if (h != NULL)
1920 {
1921 h->needs_plt = 1;
1922 h->plt.refcount += 1;
1923 }
1924 goto create_got;
1925
6a3e1bae
L
1926 case R_X86_64_SIZE32:
1927 case R_X86_64_SIZE64:
06a6a421 1928 size_reloc = TRUE;
6a3e1bae
L
1929 goto do_size;
1930
248775ba
L
1931 case R_X86_64_32:
1932 if (!ABI_64_P (abfd))
1933 goto pointer;
cc78d0af
AJ
1934 case R_X86_64_8:
1935 case R_X86_64_16:
70256ad8 1936 case R_X86_64_32S:
1b71fb54
AJ
1937 /* Let's help debug shared library creation. These relocs
1938 cannot be used in shared libs. Don't error out for
1939 sections we don't care about, such as debug sections or
1940 non-constant sections. */
0e1862bb 1941 if (bfd_link_pic (info)
1b71fb54
AJ
1942 && (sec->flags & SEC_ALLOC) != 0
1943 && (sec->flags & SEC_READONLY) != 0)
1944 {
09a24cbf 1945 if (h)
4c544807
L
1946 name = h->root.root.string;
1947 else
1948 name = bfd_elf_sym_name (abfd, symtab_hdr, isym, NULL);
1b71fb54 1949 (*_bfd_error_handler)
d003868e 1950 (_("%B: relocation %s against `%s' can not be used when making a shared object; recompile with -fPIC"),
4c544807 1951 abfd, x86_64_elf_howto_table[r_type].name, name);
1b71fb54 1952 bfd_set_error (bfd_error_bad_value);
c2e61a4e 1953 return FALSE;
1b71fb54
AJ
1954 }
1955 /* Fall through. */
1956
c434dee6
AJ
1957 case R_X86_64_PC8:
1958 case R_X86_64_PC16:
70256ad8 1959 case R_X86_64_PC32:
c3320543 1960 case R_X86_64_PC32_BND:
d6ab8113 1961 case R_X86_64_PC64:
1b71fb54 1962 case R_X86_64_64:
248775ba 1963pointer:
0e1862bb 1964 if (h != NULL && bfd_link_executable (info))
c434dee6
AJ
1965 {
1966 /* If this reloc is in a read-only section, we might
1967 need a copy reloc. We can't check reliably at this
1968 stage whether the section is read-only, as input
1969 sections have not yet been mapped to output sections.
1970 Tentatively set the flag for now, and correct in
1971 adjust_dynamic_symbol. */
f5385ebf 1972 h->non_got_ref = 1;
c434dee6
AJ
1973
1974 /* We may need a .plt entry if the function this reloc
1975 refers to is in a shared lib. */
1976 h->plt.refcount += 1;
5db4f0d3
L
1977 if (r_type == R_X86_64_PC32)
1978 {
1979 /* Since something like ".long foo - ." may be used
1980 as pointer, make sure that PLT is used if foo is
1981 a function defined in a shared library. */
1982 if ((sec->flags & SEC_CODE) == 0)
1983 h->pointer_equality_needed = 1;
1984 }
1985 else if (r_type != R_X86_64_PC32_BND
1986 && r_type != R_X86_64_PC64)
04ebc307
L
1987 {
1988 h->pointer_equality_needed = 1;
1989 /* At run-time, R_X86_64_64 can be resolved for both
1990 x86-64 and x32. But R_X86_64_32 and R_X86_64_32S
1991 can only be resolved for x32. */
1992 if ((sec->flags & SEC_READONLY) == 0
1993 && (r_type == R_X86_64_64
1994 || (!ABI_64_P (abfd)
1995 && (r_type == R_X86_64_32
1996 || r_type == R_X86_64_32S))))
1997 {
1998 struct elf_x86_64_link_hash_entry *eh
1999 = (struct elf_x86_64_link_hash_entry *) h;
2000 eh->func_pointer_refcount += 1;
2001 }
2002 }
c434dee6 2003 }
70256ad8 2004
06a6a421 2005 size_reloc = FALSE;
6a3e1bae 2006do_size:
70256ad8
AJ
2007 /* If we are creating a shared library, and this is a reloc
2008 against a global symbol, or a non PC relative reloc
2009 against a local symbol, then we need to copy the reloc
2010 into the shared library. However, if we are linking with
2011 -Bsymbolic, we do not need to copy a reloc against a
2012 global symbol which is defined in an object we are
407443a3 2013 including in the link (i.e., DEF_REGULAR is set). At
70256ad8
AJ
2014 this point we have not seen all the input files, so it is
2015 possible that DEF_REGULAR is not set now but will be set
c434dee6
AJ
2016 later (it is never cleared). In case of a weak definition,
2017 DEF_REGULAR may be cleared later by a strong definition in
2018 a shared library. We account for that possibility below by
2019 storing information in the relocs_copied field of the hash
2020 table entry. A similar situation occurs when creating
2021 shared libraries and symbol visibility changes render the
31c0ebfe 2022 symbol local.
c434dee6
AJ
2023
2024 If on the other hand, we are creating an executable, we
2025 may need to keep relocations for symbols satisfied by a
2026 dynamic library if we manage to avoid copy relocs for the
0f88be7a 2027 symbol. */
0e1862bb 2028 if ((bfd_link_pic (info)
c434dee6 2029 && (sec->flags & SEC_ALLOC) != 0
d8045f23 2030 && (! IS_X86_64_PCREL_TYPE (r_type)
c434dee6 2031 || (h != NULL
55255dae 2032 && (! SYMBOLIC_BIND (info, h)
c434dee6 2033 || h->root.type == bfd_link_hash_defweak
f5385ebf 2034 || !h->def_regular))))
d40d037c 2035 || (ELIMINATE_COPY_RELOCS
0e1862bb 2036 && !bfd_link_pic (info)
c434dee6
AJ
2037 && (sec->flags & SEC_ALLOC) != 0
2038 && h != NULL
2039 && (h->root.type == bfd_link_hash_defweak
0f88be7a 2040 || !h->def_regular)))
70256ad8 2041 {
e03a8ed8
L
2042 struct elf_dyn_relocs *p;
2043 struct elf_dyn_relocs **head;
c434dee6
AJ
2044
2045 /* We must copy these reloc types into the output file.
2046 Create a reloc section in dynobj and make room for
2047 this reloc. */
70256ad8
AJ
2048 if (sreloc == NULL)
2049 {
c434dee6
AJ
2050 if (htab->elf.dynobj == NULL)
2051 htab->elf.dynobj = abfd;
2052
83bac4b0 2053 sreloc = _bfd_elf_make_dynamic_reloc_section
82e96e07
L
2054 (sec, htab->elf.dynobj, ABI_64_P (abfd) ? 3 : 2,
2055 abfd, /*rela?*/ TRUE);
70256ad8 2056
70256ad8 2057 if (sreloc == NULL)
c2e61a4e 2058 return FALSE;
70256ad8
AJ
2059 }
2060
c434dee6
AJ
2061 /* If this is a global symbol, we count the number of
2062 relocations we need for this symbol. */
2063 if (h != NULL)
70256ad8 2064 {
351f65ca 2065 head = &((struct elf_x86_64_link_hash_entry *) h)->dyn_relocs;
c434dee6
AJ
2066 }
2067 else
2068 {
2069 /* Track dynamic relocs needed for local syms too.
2070 We really need local syms available to do this
2071 easily. Oh well. */
c434dee6 2072 asection *s;
87d72d41 2073 void **vpp;
87d72d41
AM
2074
2075 isym = bfd_sym_from_r_symndx (&htab->sym_cache,
2076 abfd, r_symndx);
2077 if (isym == NULL)
2078 return FALSE;
2079
2080 s = bfd_section_from_elf_index (abfd, isym->st_shndx);
c434dee6 2081 if (s == NULL)
87d72d41 2082 s = sec;
70256ad8 2083
e81d3500
DD
2084 /* Beware of type punned pointers vs strict aliasing
2085 rules. */
2086 vpp = &(elf_section_data (s)->local_dynrel);
e03a8ed8 2087 head = (struct elf_dyn_relocs **)vpp;
c434dee6 2088 }
70256ad8 2089
c434dee6
AJ
2090 p = *head;
2091 if (p == NULL || p->sec != sec)
2092 {
2093 bfd_size_type amt = sizeof *p;
d8045f23 2094
e03a8ed8 2095 p = ((struct elf_dyn_relocs *)
c434dee6 2096 bfd_alloc (htab->elf.dynobj, amt));
70256ad8 2097 if (p == NULL)
c2e61a4e 2098 return FALSE;
c434dee6
AJ
2099 p->next = *head;
2100 *head = p;
2101 p->sec = sec;
2102 p->count = 0;
2103 p->pc_count = 0;
70256ad8 2104 }
c434dee6
AJ
2105
2106 p->count += 1;
06a6a421
L
2107 /* Count size relocation as PC-relative relocation. */
2108 if (IS_X86_64_PCREL_TYPE (r_type) || size_reloc)
c434dee6 2109 p->pc_count += 1;
70256ad8
AJ
2110 }
2111 break;
fe4770f4
AJ
2112
2113 /* This relocation describes the C++ object vtable hierarchy.
2114 Reconstruct it for later use during GC. */
2115 case R_X86_64_GNU_VTINHERIT:
c152c796 2116 if (!bfd_elf_gc_record_vtinherit (abfd, sec, h, rel->r_offset))
c2e61a4e 2117 return FALSE;
fe4770f4
AJ
2118 break;
2119
2120 /* This relocation describes which C++ vtable entries are actually
2121 used. Record for later use during GC. */
2122 case R_X86_64_GNU_VTENTRY:
d17e0c6e
JB
2123 BFD_ASSERT (h != NULL);
2124 if (h != NULL
2125 && !bfd_elf_gc_record_vtentry (abfd, sec, h, rel->r_addend))
c2e61a4e 2126 return FALSE;
fe4770f4 2127 break;
c434dee6
AJ
2128
2129 default:
2130 break;
70256ad8 2131 }
dd7e64d4
L
2132
2133 if (use_plt_got
2134 && h != NULL
2135 && h->plt.refcount > 0
8ded2ddc
L
2136 && (((info->flags & DF_BIND_NOW) && !h->pointer_equality_needed)
2137 || h->got.refcount > 0)
dd7e64d4
L
2138 && htab->plt_got == NULL)
2139 {
2140 /* Create the GOT procedure linkage table. */
2141 unsigned int plt_got_align;
2142 const struct elf_backend_data *bed;
2143
2144 bed = get_elf_backend_data (info->output_bfd);
2145 BFD_ASSERT (sizeof (elf_x86_64_legacy_plt2_entry) == 8
2146 && (sizeof (elf_x86_64_bnd_plt2_entry)
2147 == sizeof (elf_x86_64_legacy_plt2_entry)));
2148 plt_got_align = 3;
2149
2150 if (htab->elf.dynobj == NULL)
2151 htab->elf.dynobj = abfd;
2152 htab->plt_got
2153 = bfd_make_section_anyway_with_flags (htab->elf.dynobj,
2154 ".plt.got",
2155 (bed->dynamic_sec_flags
2156 | SEC_ALLOC
2157 | SEC_CODE
2158 | SEC_LOAD
2159 | SEC_READONLY));
2160 if (htab->plt_got == NULL
2161 || !bfd_set_section_alignment (htab->elf.dynobj,
2162 htab->plt_got,
2163 plt_got_align))
2164 return FALSE;
2165 }
c1d11331 2166
56ceb5b5
L
2167 if ((r_type == R_X86_64_GOTPCREL
2168 || r_type == R_X86_64_GOTPCRELX
2169 || r_type == R_X86_64_REX_GOTPCRELX)
c1d11331 2170 && (h == NULL || h->type != STT_GNU_IFUNC))
56ceb5b5 2171 sec->need_convert_load = 1;
70256ad8
AJ
2172 }
2173
b34976b6 2174 return TRUE;
70256ad8
AJ
2175}
2176
2177/* Return the section that should be marked against GC for a given
407443a3 2178 relocation. */
70256ad8
AJ
2179
2180static asection *
351f65ca
L
2181elf_x86_64_gc_mark_hook (asection *sec,
2182 struct bfd_link_info *info,
2183 Elf_Internal_Rela *rel,
2184 struct elf_link_hash_entry *h,
2185 Elf_Internal_Sym *sym)
70256ad8
AJ
2186{
2187 if (h != NULL)
351f65ca 2188 switch (ELF32_R_TYPE (rel->r_info))
07adf181
AM
2189 {
2190 case R_X86_64_GNU_VTINHERIT:
2191 case R_X86_64_GNU_VTENTRY:
2192 return NULL;
2193 }
2194
2195 return _bfd_elf_gc_mark_hook (sec, info, rel, h, sym);
70256ad8
AJ
2196}
2197
407443a3 2198/* Update the got entry reference counts for the section being removed. */
70256ad8 2199
b34976b6 2200static bfd_boolean
351f65ca
L
2201elf_x86_64_gc_sweep_hook (bfd *abfd, struct bfd_link_info *info,
2202 asection *sec,
2203 const Elf_Internal_Rela *relocs)
70256ad8 2204{
351f65ca 2205 struct elf_x86_64_link_hash_table *htab;
70256ad8
AJ
2206 Elf_Internal_Shdr *symtab_hdr;
2207 struct elf_link_hash_entry **sym_hashes;
2208 bfd_signed_vma *local_got_refcounts;
2209 const Elf_Internal_Rela *rel, *relend;
c434dee6 2210
0e1862bb 2211 if (bfd_link_relocatable (info))
7dda2462
TG
2212 return TRUE;
2213
351f65ca 2214 htab = elf_x86_64_hash_table (info);
4dfe6ac6
NC
2215 if (htab == NULL)
2216 return FALSE;
2217
c434dee6 2218 elf_section_data (sec)->local_dynrel = NULL;
70256ad8 2219
0ffa91dd 2220 symtab_hdr = &elf_symtab_hdr (abfd);
70256ad8
AJ
2221 sym_hashes = elf_sym_hashes (abfd);
2222 local_got_refcounts = elf_local_got_refcounts (abfd);
2223
351f65ca 2224 htab = elf_x86_64_hash_table (info);
70256ad8
AJ
2225 relend = relocs + sec->reloc_count;
2226 for (rel = relocs; rel < relend; rel++)
26e41594
AM
2227 {
2228 unsigned long r_symndx;
2229 unsigned int r_type;
2230 struct elf_link_hash_entry *h = NULL;
04ebc307 2231 bfd_boolean pointer_reloc;
70256ad8 2232
351f65ca 2233 r_symndx = htab->r_sym (rel->r_info);
26e41594
AM
2234 if (r_symndx >= symtab_hdr->sh_info)
2235 {
26e41594 2236 h = sym_hashes[r_symndx - symtab_hdr->sh_info];
3eb128b2
AM
2237 while (h->root.type == bfd_link_hash_indirect
2238 || h->root.type == bfd_link_hash_warning)
2239 h = (struct elf_link_hash_entry *) h->root.u.i.link;
26e41594 2240 }
bb1cb422
L
2241 else
2242 {
2243 /* A local symbol. */
2244 Elf_Internal_Sym *isym;
2245
2246 isym = bfd_sym_from_r_symndx (&htab->sym_cache,
2247 abfd, r_symndx);
2248
2249 /* Check relocation against local STT_GNU_IFUNC symbol. */
2250 if (isym != NULL
82e96e07 2251 && ELF_ST_TYPE (isym->st_info) == STT_GNU_IFUNC)
bb1cb422 2252 {
351f65ca 2253 h = elf_x86_64_get_local_sym_hash (htab, abfd, rel, FALSE);
bb1cb422
L
2254 if (h == NULL)
2255 abort ();
2256 }
2257 }
c434dee6 2258
3db2e7dd
L
2259 if (h)
2260 {
2261 struct elf_x86_64_link_hash_entry *eh;
2262 struct elf_dyn_relocs **pp;
2263 struct elf_dyn_relocs *p;
2264
2265 eh = (struct elf_x86_64_link_hash_entry *) h;
2266
2267 for (pp = &eh->dyn_relocs; (p = *pp) != NULL; pp = &p->next)
2268 if (p->sec == sec)
2269 {
2270 /* Everything must go for SEC. */
2271 *pp = p->next;
2272 break;
2273 }
2274 }
2275
351f65ca
L
2276 r_type = ELF32_R_TYPE (rel->r_info);
2277 if (! elf_x86_64_tls_transition (info, abfd, sec, NULL,
2278 symtab_hdr, sym_hashes,
2279 &r_type, GOT_UNKNOWN,
2280 rel, relend, h, r_symndx))
142411ca
L
2281 return FALSE;
2282
04ebc307 2283 pointer_reloc = FALSE;
26e41594
AM
2284 switch (r_type)
2285 {
2286 case R_X86_64_TLSLD:
4dfe6ac6
NC
2287 if (htab->tls_ld_got.refcount > 0)
2288 htab->tls_ld_got.refcount -= 1;
26e41594 2289 break;
c434dee6 2290
26e41594 2291 case R_X86_64_TLSGD:
67a4f2b7
AO
2292 case R_X86_64_GOTPC32_TLSDESC:
2293 case R_X86_64_TLSDESC_CALL:
26e41594
AM
2294 case R_X86_64_GOTTPOFF:
2295 case R_X86_64_GOT32:
2296 case R_X86_64_GOTPCREL:
56ceb5b5
L
2297 case R_X86_64_GOTPCRELX:
2298 case R_X86_64_REX_GOTPCRELX:
7b81dfbb
AJ
2299 case R_X86_64_GOT64:
2300 case R_X86_64_GOTPCREL64:
2301 case R_X86_64_GOTPLT64:
26e41594
AM
2302 if (h != NULL)
2303 {
2304 if (h->got.refcount > 0)
2305 h->got.refcount -= 1;
bb1cb422
L
2306 if (h->type == STT_GNU_IFUNC)
2307 {
2308 if (h->plt.refcount > 0)
2309 h->plt.refcount -= 1;
2310 }
26e41594
AM
2311 }
2312 else if (local_got_refcounts != NULL)
2313 {
2314 if (local_got_refcounts[r_symndx] > 0)
2315 local_got_refcounts[r_symndx] -= 1;
2316 }
2317 break;
c434dee6 2318
26e41594 2319 case R_X86_64_32:
26e41594 2320 case R_X86_64_32S:
04ebc307
L
2321 pointer_reloc = !ABI_64_P (abfd);
2322 goto pointer;
2323
2324 case R_X86_64_64:
2325 pointer_reloc = TRUE;
2326 case R_X86_64_8:
2327 case R_X86_64_16:
26e41594
AM
2328 case R_X86_64_PC8:
2329 case R_X86_64_PC16:
2330 case R_X86_64_PC32:
c3320543 2331 case R_X86_64_PC32_BND:
d6ab8113 2332 case R_X86_64_PC64:
1788fc08
L
2333 case R_X86_64_SIZE32:
2334 case R_X86_64_SIZE64:
04ebc307 2335pointer:
0e1862bb 2336 if (bfd_link_pic (info)
3db2e7dd 2337 && (h == NULL || h->type != STT_GNU_IFUNC))
26e41594
AM
2338 break;
2339 /* Fall thru */
c434dee6 2340
26e41594 2341 case R_X86_64_PLT32:
c3320543 2342 case R_X86_64_PLT32_BND:
7b81dfbb 2343 case R_X86_64_PLTOFF64:
26e41594
AM
2344 if (h != NULL)
2345 {
2346 if (h->plt.refcount > 0)
2347 h->plt.refcount -= 1;
04ebc307
L
2348 if (pointer_reloc && (sec->flags & SEC_READONLY) == 0)
2349 {
2350 struct elf_x86_64_link_hash_entry *eh
2351 = (struct elf_x86_64_link_hash_entry *) h;
2352 if (eh->func_pointer_refcount > 0)
2353 eh->func_pointer_refcount -= 1;
2354 }
26e41594
AM
2355 }
2356 break;
70256ad8 2357
26e41594
AM
2358 default:
2359 break;
2360 }
2361 }
70256ad8 2362
b34976b6 2363 return TRUE;
70256ad8
AJ
2364}
2365
2366/* Adjust a symbol defined by a dynamic object and referenced by a
2367 regular object. The current definition is in some section of the
2368 dynamic object, but we're not including those sections. We have to
2369 change the definition to something the rest of the link can
407443a3 2370 understand. */
70256ad8 2371
b34976b6 2372static bfd_boolean
351f65ca
L
2373elf_x86_64_adjust_dynamic_symbol (struct bfd_link_info *info,
2374 struct elf_link_hash_entry *h)
70256ad8 2375{
351f65ca 2376 struct elf_x86_64_link_hash_table *htab;
70256ad8 2377 asection *s;
5ca5bb35
L
2378 struct elf_x86_64_link_hash_entry *eh;
2379 struct elf_dyn_relocs *p;
70256ad8 2380
cbe950e9
L
2381 /* STT_GNU_IFUNC symbol must go through PLT. */
2382 if (h->type == STT_GNU_IFUNC)
2383 {
73bcf233
L
2384 /* All local STT_GNU_IFUNC references must be treate as local
2385 calls via local PLT. */
5ca5bb35
L
2386 if (h->ref_regular
2387 && SYMBOL_CALLS_LOCAL (info, h))
2388 {
73bcf233 2389 bfd_size_type pc_count = 0, count = 0;
5ca5bb35
L
2390 struct elf_dyn_relocs **pp;
2391
2392 eh = (struct elf_x86_64_link_hash_entry *) h;
2393 for (pp = &eh->dyn_relocs; (p = *pp) != NULL; )
2394 {
2395 pc_count += p->pc_count;
2396 p->count -= p->pc_count;
2397 p->pc_count = 0;
73bcf233 2398 count += p->count;
5ca5bb35
L
2399 if (p->count == 0)
2400 *pp = p->next;
2401 else
2402 pp = &p->next;
2403 }
2404
73bcf233 2405 if (pc_count || count)
5ca5bb35
L
2406 {
2407 h->needs_plt = 1;
5ca5bb35 2408 h->non_got_ref = 1;
a5479e5f
L
2409 if (h->plt.refcount <= 0)
2410 h->plt.refcount = 1;
2411 else
2412 h->plt.refcount += 1;
5ca5bb35
L
2413 }
2414 }
2415
cbe950e9
L
2416 if (h->plt.refcount <= 0)
2417 {
2418 h->plt.offset = (bfd_vma) -1;
2419 h->needs_plt = 0;
2420 }
2421 return TRUE;
2422 }
2423
70256ad8
AJ
2424 /* If this is a function, put it in the procedure linkage table. We
2425 will fill in the contents of the procedure linkage table later,
2426 when we know the address of the .got section. */
2427 if (h->type == STT_FUNC
f5385ebf 2428 || h->needs_plt)
70256ad8 2429 {
c434dee6 2430 if (h->plt.refcount <= 0
27482721
AJ
2431 || SYMBOL_CALLS_LOCAL (info, h)
2432 || (ELF_ST_VISIBILITY (h->other) != STV_DEFAULT
2433 && h->root.type == bfd_link_hash_undefweak))
70256ad8 2434 {
70256ad8
AJ
2435 /* This case can occur if we saw a PLT32 reloc in an input
2436 file, but the symbol was never referred to by a dynamic
2437 object, or if all references were garbage collected. In
2438 such a case, we don't actually need to build a procedure
2439 linkage table, and we can just do a PC32 reloc instead. */
70256ad8 2440 h->plt.offset = (bfd_vma) -1;
f5385ebf 2441 h->needs_plt = 0;
70256ad8
AJ
2442 }
2443
b34976b6 2444 return TRUE;
70256ad8 2445 }
bbd7ec4a 2446 else
c434dee6
AJ
2447 /* It's possible that we incorrectly decided a .plt reloc was
2448 needed for an R_X86_64_PC32 reloc to a non-function sym in
2449 check_relocs. We can't decide accurately between function and
2450 non-function syms in check-relocs; Objects loaded later in
2451 the link may change h->type. So fix it now. */
bbd7ec4a 2452 h->plt.offset = (bfd_vma) -1;
70256ad8
AJ
2453
2454 /* If this is a weak symbol, and there is a real definition, the
2455 processor independent code will have arranged for us to see the
407443a3 2456 real definition first, and we can just use the same value. */
f6e332e6 2457 if (h->u.weakdef != NULL)
70256ad8 2458 {
f6e332e6
AM
2459 BFD_ASSERT (h->u.weakdef->root.type == bfd_link_hash_defined
2460 || h->u.weakdef->root.type == bfd_link_hash_defweak);
2461 h->root.u.def.section = h->u.weakdef->root.u.def.section;
2462 h->root.u.def.value = h->u.weakdef->root.u.def.value;
d40d037c 2463 if (ELIMINATE_COPY_RELOCS || info->nocopyreloc)
bc696fd5
L
2464 {
2465 eh = (struct elf_x86_64_link_hash_entry *) h;
2466 h->non_got_ref = h->u.weakdef->non_got_ref;
2467 eh->needs_copy = h->u.weakdef->needs_copy;
2468 }
b34976b6 2469 return TRUE;
70256ad8
AJ
2470 }
2471
2472 /* This is a reference to a symbol defined by a dynamic object which
407443a3 2473 is not a function. */
70256ad8
AJ
2474
2475 /* If we are creating a shared library, we must presume that the
2476 only references to the symbol are via the global offset table.
2477 For such cases we need not do anything here; the relocations will
407443a3 2478 be handled correctly by relocate_section. */
0e1862bb 2479 if (!bfd_link_executable (info))
b34976b6 2480 return TRUE;
70256ad8
AJ
2481
2482 /* If there are no references to this symbol that do not use the
2483 GOT, we don't need to generate a copy reloc. */
f5385ebf 2484 if (!h->non_got_ref)
b34976b6 2485 return TRUE;
70256ad8 2486
c434dee6
AJ
2487 /* If -z nocopyreloc was given, we won't generate them either. */
2488 if (info->nocopyreloc)
2489 {
f5385ebf 2490 h->non_got_ref = 0;
b34976b6 2491 return TRUE;
c434dee6
AJ
2492 }
2493
31c0ebfe 2494 if (ELIMINATE_COPY_RELOCS)
c434dee6 2495 {
351f65ca 2496 eh = (struct elf_x86_64_link_hash_entry *) h;
d40d037c
AJ
2497 for (p = eh->dyn_relocs; p != NULL; p = p->next)
2498 {
2499 s = p->sec->output_section;
2500 if (s != NULL && (s->flags & SEC_READONLY) != 0)
2501 break;
2502 }
2503
2504 /* If we didn't find any dynamic relocs in read-only sections, then
2505 we'll be keeping the dynamic relocs and avoiding the copy reloc. */
2506 if (p == NULL)
2507 {
f5385ebf 2508 h->non_got_ref = 0;
d40d037c
AJ
2509 return TRUE;
2510 }
c434dee6
AJ
2511 }
2512
70256ad8 2513 /* We must allocate the symbol in our .dynbss section, which will
407443a3 2514 become part of the .bss section of the executable. There will be
70256ad8
AJ
2515 an entry for this symbol in the .dynsym section. The dynamic
2516 object will contain position independent code, so all references
2517 from the dynamic object to this symbol will go through the global
2518 offset table. The dynamic linker will use the .dynsym entry to
2519 determine the address it must put in the global offset table, so
2520 both the dynamic object and the regular object will refer to the
2521 same memory location for the variable. */
2522
351f65ca 2523 htab = elf_x86_64_hash_table (info);
4dfe6ac6
NC
2524 if (htab == NULL)
2525 return FALSE;
70256ad8
AJ
2526
2527 /* We must generate a R_X86_64_COPY reloc to tell the dynamic linker
2528 to copy the initial value out of the dynamic object and into the
cedb70c5 2529 runtime process image. */
1d7e9d18 2530 if ((h->root.u.def.section->flags & SEC_ALLOC) != 0 && h->size != 0)
70256ad8 2531 {
351f65ca
L
2532 const struct elf_backend_data *bed;
2533 bed = get_elf_backend_data (info->output_bfd);
2534 htab->srelbss->size += bed->s->sizeof_rela;
f5385ebf 2535 h->needs_copy = 1;
70256ad8
AJ
2536 }
2537
c434dee6 2538 s = htab->sdynbss;
70256ad8 2539
6cabe1ea 2540 return _bfd_elf_adjust_dynamic_copy (info, h, s);
70256ad8
AJ
2541}
2542
c434dee6
AJ
2543/* Allocate space in .plt, .got and associated reloc sections for
2544 dynamic relocs. */
2545
b34976b6 2546static bfd_boolean
351f65ca 2547elf_x86_64_allocate_dynrelocs (struct elf_link_hash_entry *h, void * inf)
c434dee6
AJ
2548{
2549 struct bfd_link_info *info;
351f65ca
L
2550 struct elf_x86_64_link_hash_table *htab;
2551 struct elf_x86_64_link_hash_entry *eh;
e03a8ed8 2552 struct elf_dyn_relocs *p;
351f65ca 2553 const struct elf_backend_data *bed;
eed180f8 2554 unsigned int plt_entry_size;
c434dee6 2555
e92d460e 2556 if (h->root.type == bfd_link_hash_indirect)
b34976b6 2557 return TRUE;
c434dee6 2558
351f65ca 2559 eh = (struct elf_x86_64_link_hash_entry *) h;
e92d460e 2560
c434dee6 2561 info = (struct bfd_link_info *) inf;
351f65ca 2562 htab = elf_x86_64_hash_table (info);
4dfe6ac6
NC
2563 if (htab == NULL)
2564 return FALSE;
351f65ca 2565 bed = get_elf_backend_data (info->output_bfd);
eed180f8 2566 plt_entry_size = GET_PLT_ENTRY_SIZE (info->output_bfd);
c434dee6 2567
dd7e64d4
L
2568 /* We can't use the GOT PLT if pointer equality is needed since
2569 finish_dynamic_symbol won't clear symbol value and the dynamic
2570 linker won't update the GOT slot. We will get into an infinite
2571 loop at run-time. */
2572 if (htab->plt_got != NULL
2573 && h->type != STT_GNU_IFUNC
2574 && !h->pointer_equality_needed
2575 && h->plt.refcount > 0
2576 && h->got.refcount > 0)
2577 {
2578 /* Don't use the regular PLT if there are both GOT and GOTPLT
2579 reloctions. */
2580 h->plt.offset = (bfd_vma) -1;
2581
2582 /* Use the GOT PLT. */
2583 eh->plt_got.refcount = 1;
2584 }
2585
04ebc307
L
2586 /* Clear the reference count of function pointer relocations if
2587 symbol isn't a normal function. */
2588 if (h->type != STT_FUNC)
2589 eh->func_pointer_refcount = 0;
2590
cbe950e9
L
2591 /* Since STT_GNU_IFUNC symbol must go through PLT, we handle it
2592 here if it is defined and referenced in a non-shared object. */
2593 if (h->type == STT_GNU_IFUNC
2594 && h->def_regular)
0ff2b86e
L
2595 {
2596 if (_bfd_elf_allocate_ifunc_dyn_relocs (info, h,
2597 &eh->dyn_relocs,
2598 plt_entry_size,
2599 plt_entry_size,
2600 GOT_ENTRY_SIZE))
2601 {
2602 asection *s = htab->plt_bnd;
2603 if (h->plt.offset != (bfd_vma) -1 && s != NULL)
2604 {
2605 /* Use the .plt.bnd section if it is created. */
2606 eh->plt_bnd.offset = s->size;
2607
2608 /* Make room for this entry in the .plt.bnd section. */
2609 s->size += sizeof (elf_x86_64_legacy_plt2_entry);
2610 }
2611
2612 return TRUE;
2613 }
2614 else
2615 return FALSE;
2616 }
04ebc307
L
2617 /* Don't create the PLT entry if there are only function pointer
2618 relocations which can be resolved at run-time. */
cbe950e9 2619 else if (htab->elf.dynamic_sections_created
04ebc307
L
2620 && (h->plt.refcount > eh->func_pointer_refcount
2621 || eh->plt_got.refcount > 0))
c434dee6 2622 {
25070364
L
2623 bfd_boolean use_plt_got;
2624
04ebc307
L
2625 /* Clear the reference count of function pointer relocations
2626 if PLT is used. */
2627 eh->func_pointer_refcount = 0;
2628
8ded2ddc 2629 if ((info->flags & DF_BIND_NOW) && !h->pointer_equality_needed)
25070364
L
2630 {
2631 /* Don't use the regular PLT for DF_BIND_NOW. */
2632 h->plt.offset = (bfd_vma) -1;
2633
2634 /* Use the GOT PLT. */
2635 h->got.refcount = 1;
2636 eh->plt_got.refcount = 1;
2637 }
2638
2639 use_plt_got = eh->plt_got.refcount > 0;
dd7e64d4 2640
c434dee6
AJ
2641 /* Make sure this symbol is output as a dynamic symbol.
2642 Undefined weak syms won't yet be marked as dynamic. */
2643 if (h->dynindx == -1
f5385ebf 2644 && !h->forced_local)
c434dee6 2645 {
c152c796 2646 if (! bfd_elf_link_record_dynamic_symbol (info, h))
b34976b6 2647 return FALSE;
c434dee6
AJ
2648 }
2649
0e1862bb 2650 if (bfd_link_pic (info)
27482721 2651 || WILL_CALL_FINISH_DYNAMIC_SYMBOL (1, 0, h))
c434dee6 2652 {
6de2ae4a 2653 asection *s = htab->elf.splt;
0ff2b86e 2654 asection *bnd_s = htab->plt_bnd;
dd7e64d4 2655 asection *got_s = htab->plt_got;
c434dee6 2656
7c1e8d3e
L
2657 /* If this is the first .plt entry, make room for the special
2658 first entry. The .plt section is used by prelink to undo
2659 prelinking for dynamic relocations. */
2660 if (s->size == 0)
2661 s->size = plt_entry_size;
2662
dd7e64d4
L
2663 if (use_plt_got)
2664 eh->plt_got.offset = got_s->size;
2665 else
2666 {
2667 h->plt.offset = s->size;
2668 if (bnd_s)
2669 eh->plt_bnd.offset = bnd_s->size;
2670 }
c434dee6
AJ
2671
2672 /* If this symbol is not defined in a regular file, and we are
2673 not generating a shared library, then set the symbol to this
2674 location in the .plt. This is required to make function
2675 pointers compare as equal between the normal executable and
2676 the shared library. */
0e1862bb 2677 if (! bfd_link_pic (info)
f5385ebf 2678 && !h->def_regular)
c434dee6 2679 {
dd7e64d4 2680 if (use_plt_got)
0ff2b86e 2681 {
dd7e64d4
L
2682 /* We need to make a call to the entry of the GOT PLT
2683 instead of regular PLT entry. */
2684 h->root.u.def.section = got_s;
2685 h->root.u.def.value = eh->plt_got.offset;
0ff2b86e
L
2686 }
2687 else
2688 {
dd7e64d4
L
2689 if (bnd_s)
2690 {
2691 /* We need to make a call to the entry of the second
2692 PLT instead of regular PLT entry. */
2693 h->root.u.def.section = bnd_s;
2694 h->root.u.def.value = eh->plt_bnd.offset;
2695 }
2696 else
2697 {
2698 h->root.u.def.section = s;
2699 h->root.u.def.value = h->plt.offset;
2700 }
0ff2b86e 2701 }
c434dee6
AJ
2702 }
2703
2704 /* Make room for this entry. */
dd7e64d4
L
2705 if (use_plt_got)
2706 got_s->size += sizeof (elf_x86_64_legacy_plt2_entry);
2707 else
2708 {
2709 s->size += plt_entry_size;
2710 if (bnd_s)
2711 bnd_s->size += sizeof (elf_x86_64_legacy_plt2_entry);
c434dee6 2712
dd7e64d4
L
2713 /* We also need to make an entry in the .got.plt section,
2714 which will be placed in the .got section by the linker
2715 script. */
2716 htab->elf.sgotplt->size += GOT_ENTRY_SIZE;
c434dee6 2717
dd7e64d4
L
2718 /* We also need to make an entry in the .rela.plt
2719 section. */
2720 htab->elf.srelplt->size += bed->s->sizeof_rela;
2721 htab->elf.srelplt->reloc_count++;
2722 }
c434dee6
AJ
2723 }
2724 else
2725 {
2726 h->plt.offset = (bfd_vma) -1;
f5385ebf 2727 h->needs_plt = 0;
c434dee6
AJ
2728 }
2729 }
2730 else
2731 {
2732 h->plt.offset = (bfd_vma) -1;
f5385ebf 2733 h->needs_plt = 0;
c434dee6
AJ
2734 }
2735
67a4f2b7
AO
2736 eh->tlsdesc_got = (bfd_vma) -1;
2737
bffbf940
JJ
2738 /* If R_X86_64_GOTTPOFF symbol is now local to the binary,
2739 make it a R_X86_64_TPOFF32 requiring no GOT entry. */
2740 if (h->got.refcount > 0
0e1862bb 2741 && bfd_link_executable (info)
bffbf940 2742 && h->dynindx == -1
351f65ca 2743 && elf_x86_64_hash_entry (h)->tls_type == GOT_TLS_IE)
d8045f23
NC
2744 {
2745 h->got.offset = (bfd_vma) -1;
2746 }
bffbf940 2747 else if (h->got.refcount > 0)
c434dee6
AJ
2748 {
2749 asection *s;
b34976b6 2750 bfd_boolean dyn;
351f65ca 2751 int tls_type = elf_x86_64_hash_entry (h)->tls_type;
c434dee6
AJ
2752
2753 /* Make sure this symbol is output as a dynamic symbol.
2754 Undefined weak syms won't yet be marked as dynamic. */
2755 if (h->dynindx == -1
f5385ebf 2756 && !h->forced_local)
c434dee6 2757 {
c152c796 2758 if (! bfd_elf_link_record_dynamic_symbol (info, h))
b34976b6 2759 return FALSE;
c434dee6
AJ
2760 }
2761
67a4f2b7
AO
2762 if (GOT_TLS_GDESC_P (tls_type))
2763 {
6de2ae4a 2764 eh->tlsdesc_got = htab->elf.sgotplt->size
351f65ca 2765 - elf_x86_64_compute_jump_table_size (htab);
6de2ae4a 2766 htab->elf.sgotplt->size += 2 * GOT_ENTRY_SIZE;
67a4f2b7
AO
2767 h->got.offset = (bfd_vma) -2;
2768 }
2769 if (! GOT_TLS_GDESC_P (tls_type)
2770 || GOT_TLS_GD_P (tls_type))
2771 {
6de2ae4a 2772 s = htab->elf.sgot;
67a4f2b7
AO
2773 h->got.offset = s->size;
2774 s->size += GOT_ENTRY_SIZE;
2775 if (GOT_TLS_GD_P (tls_type))
2776 s->size += GOT_ENTRY_SIZE;
2777 }
c434dee6 2778 dyn = htab->elf.dynamic_sections_created;
bffbf940
JJ
2779 /* R_X86_64_TLSGD needs one dynamic relocation if local symbol
2780 and two if global.
2781 R_X86_64_GOTTPOFF needs one dynamic relocation. */
67a4f2b7 2782 if ((GOT_TLS_GD_P (tls_type) && h->dynindx == -1)
bffbf940 2783 || tls_type == GOT_TLS_IE)
351f65ca 2784 htab->elf.srelgot->size += bed->s->sizeof_rela;
67a4f2b7 2785 else if (GOT_TLS_GD_P (tls_type))
351f65ca 2786 htab->elf.srelgot->size += 2 * bed->s->sizeof_rela;
67a4f2b7
AO
2787 else if (! GOT_TLS_GDESC_P (tls_type)
2788 && (ELF_ST_VISIBILITY (h->other) == STV_DEFAULT
2789 || h->root.type != bfd_link_hash_undefweak)
0e1862bb 2790 && (bfd_link_pic (info)
27482721 2791 || WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn, 0, h)))
351f65ca 2792 htab->elf.srelgot->size += bed->s->sizeof_rela;
67a4f2b7
AO
2793 if (GOT_TLS_GDESC_P (tls_type))
2794 {
351f65ca 2795 htab->elf.srelplt->size += bed->s->sizeof_rela;
67a4f2b7
AO
2796 htab->tlsdesc_plt = (bfd_vma) -1;
2797 }
c434dee6
AJ
2798 }
2799 else
2800 h->got.offset = (bfd_vma) -1;
2801
c434dee6 2802 if (eh->dyn_relocs == NULL)
b34976b6 2803 return TRUE;
c434dee6
AJ
2804
2805 /* In the shared -Bsymbolic case, discard space allocated for
2806 dynamic pc-relative relocs against symbols which turn out to be
2807 defined in regular objects. For the normal shared case, discard
2808 space for pc-relative relocs that have become local due to symbol
2809 visibility changes. */
2810
0e1862bb 2811 if (bfd_link_pic (info))
c434dee6 2812 {
27482721
AJ
2813 /* Relocs that use pc_count are those that appear on a call
2814 insn, or certain REL relocs that can generated via assembly.
2815 We want calls to protected symbols to resolve directly to the
2816 function rather than going via the plt. If people want
2817 function pointer comparisons to work as expected then they
2818 should avoid writing weird assembly. */
2819 if (SYMBOL_CALLS_LOCAL (info, h))
c434dee6 2820 {
e03a8ed8 2821 struct elf_dyn_relocs **pp;
c434dee6
AJ
2822
2823 for (pp = &eh->dyn_relocs; (p = *pp) != NULL; )
2824 {
c3ce498c
L
2825 p->count -= p->pc_count;
2826 p->pc_count = 0;
c434dee6
AJ
2827 if (p->count == 0)
2828 *pp = p->next;
2829 else
2830 pp = &p->next;
2831 }
2832 }
4e795f50
AM
2833
2834 /* Also discard relocs on undefined weak syms with non-default
c353e543 2835 visibility. */
31c0ebfe 2836 if (eh->dyn_relocs != NULL)
22d606e9 2837 {
31c0ebfe
L
2838 if (h->root.type == bfd_link_hash_undefweak)
2839 {
2840 if (ELF_ST_VISIBILITY (h->other) != STV_DEFAULT)
2841 eh->dyn_relocs = NULL;
2842
2843 /* Make sure undefined weak symbols are output as a dynamic
2844 symbol in PIEs. */
2845 else if (h->dynindx == -1
2846 && ! h->forced_local
2847 && ! bfd_elf_link_record_dynamic_symbol (info, h))
2848 return FALSE;
2849 }
9d1d54d5
L
2850 /* For PIE, discard space for pc-relative relocs against
2851 symbols which turn out to need copy relocs. */
0e1862bb 2852 else if (bfd_link_executable (info)
bc696fd5 2853 && (h->needs_copy || eh->needs_copy)
31c0ebfe
L
2854 && h->def_dynamic
2855 && !h->def_regular)
9d1d54d5
L
2856 {
2857 struct elf_dyn_relocs **pp;
2858
2859 for (pp = &eh->dyn_relocs; (p = *pp) != NULL; )
2860 {
2861 if (p->pc_count != 0)
2862 *pp = p->next;
2863 else
2864 pp = &p->next;
2865 }
2866 }
22d606e9 2867 }
d8045f23 2868 }
d40d037c 2869 else if (ELIMINATE_COPY_RELOCS)
c434dee6
AJ
2870 {
2871 /* For the non-shared case, discard space for relocs against
2872 symbols which turn out to need copy relocs or are not
04ebc307
L
2873 dynamic. Keep dynamic relocations for run-time function
2874 pointer initialization. */
c434dee6 2875
04ebc307 2876 if ((!h->non_got_ref || eh->func_pointer_refcount > 0)
f5385ebf
AM
2877 && ((h->def_dynamic
2878 && !h->def_regular)
c434dee6
AJ
2879 || (htab->elf.dynamic_sections_created
2880 && (h->root.type == bfd_link_hash_undefweak
2881 || h->root.type == bfd_link_hash_undefined))))
2882 {
2883 /* Make sure this symbol is output as a dynamic symbol.
2884 Undefined weak syms won't yet be marked as dynamic. */
2885 if (h->dynindx == -1
d8045f23
NC
2886 && ! h->forced_local
2887 && ! bfd_elf_link_record_dynamic_symbol (info, h))
2888 return FALSE;
c434dee6
AJ
2889
2890 /* If that succeeded, we know we'll be keeping all the
2891 relocs. */
2892 if (h->dynindx != -1)
2893 goto keep;
2894 }
2895
2896 eh->dyn_relocs = NULL;
04ebc307 2897 eh->func_pointer_refcount = 0;
c434dee6
AJ
2898
2899 keep: ;
2900 }
2901
2902 /* Finally, allocate space. */
2903 for (p = eh->dyn_relocs; p != NULL; p = p->next)
2904 {
e7c33416
NC
2905 asection * sreloc;
2906
cbe950e9 2907 sreloc = elf_section_data (p->sec)->sreloc;
e7c33416
NC
2908
2909 BFD_ASSERT (sreloc != NULL);
2910
351f65ca 2911 sreloc->size += p->count * bed->s->sizeof_rela;
c434dee6
AJ
2912 }
2913
b34976b6 2914 return TRUE;
c434dee6
AJ
2915}
2916
c25bc9fc
L
2917/* Allocate space in .plt, .got and associated reloc sections for
2918 local dynamic relocs. */
2919
2920static bfd_boolean
351f65ca 2921elf_x86_64_allocate_local_dynrelocs (void **slot, void *inf)
c25bc9fc
L
2922{
2923 struct elf_link_hash_entry *h
2924 = (struct elf_link_hash_entry *) *slot;
2925
2926 if (h->type != STT_GNU_IFUNC
2927 || !h->def_regular
2928 || !h->ref_regular
2929 || !h->forced_local
2930 || h->root.type != bfd_link_hash_defined)
2931 abort ();
2932
351f65ca 2933 return elf_x86_64_allocate_dynrelocs (h, inf);
c25bc9fc
L
2934}
2935
c434dee6
AJ
2936/* Find any dynamic relocs that apply to read-only sections. */
2937
b34976b6 2938static bfd_boolean
351f65ca
L
2939elf_x86_64_readonly_dynrelocs (struct elf_link_hash_entry *h,
2940 void * inf)
c434dee6 2941{
351f65ca 2942 struct elf_x86_64_link_hash_entry *eh;
e03a8ed8 2943 struct elf_dyn_relocs *p;
c434dee6 2944
aa715242
L
2945 /* Skip local IFUNC symbols. */
2946 if (h->forced_local && h->type == STT_GNU_IFUNC)
2947 return TRUE;
2948
351f65ca 2949 eh = (struct elf_x86_64_link_hash_entry *) h;
c434dee6
AJ
2950 for (p = eh->dyn_relocs; p != NULL; p = p->next)
2951 {
2952 asection *s = p->sec->output_section;
2953
2954 if (s != NULL && (s->flags & SEC_READONLY) != 0)
2955 {
2956 struct bfd_link_info *info = (struct bfd_link_info *) inf;
2957
2958 info->flags |= DF_TEXTREL;
2959
0e1862bb 2960 if ((info->warn_shared_textrel && bfd_link_pic (info))
1952c5cd
L
2961 || info->error_textrel)
2962 info->callbacks->einfo (_("%P: %B: warning: relocation against `%s' in readonly section `%A'\n"),
b70321a2
L
2963 p->sec->owner, h->root.root.string,
2964 p->sec);
2965
c434dee6 2966 /* Not an error, just cut short the traversal. */
b34976b6 2967 return FALSE;
c434dee6
AJ
2968 }
2969 }
b34976b6 2970 return TRUE;
c434dee6
AJ
2971}
2972
56ceb5b5 2973/* With the local symbol, foo, we convert
daa67607
L
2974 mov foo@GOTPCREL(%rip), %reg
2975 to
2976 lea foo(%rip), %reg
56ceb5b5
L
2977 and convert
2978 call/jmp *foo@GOTPCREL(%rip)
2979 to
2980 nop call foo/jmp foo nop
2981 When PIC is false, convert
2982 test %reg, foo@GOTPCREL(%rip)
2983 to
2984 test $foo, %reg
2985 and convert
2986 binop foo@GOTPCREL(%rip), %reg
2987 to
2988 binop $foo, %reg
2989 where binop is one of adc, add, and, cmp, or, sbb, sub, xor
2990 instructions. */
daa67607
L
2991
2992static bfd_boolean
56ceb5b5
L
2993elf_x86_64_convert_load (bfd *abfd, asection *sec,
2994 struct bfd_link_info *link_info)
daa67607
L
2995{
2996 Elf_Internal_Shdr *symtab_hdr;
2997 Elf_Internal_Rela *internal_relocs;
2998 Elf_Internal_Rela *irel, *irelend;
2999 bfd_byte *contents;
3000 struct elf_x86_64_link_hash_table *htab;
3001 bfd_boolean changed_contents;
3002 bfd_boolean changed_relocs;
3003 bfd_signed_vma *local_got_refcounts;
59cab532 3004 bfd_vma maxpagesize;
daa67607
L
3005
3006 /* Don't even try to convert non-ELF outputs. */
3007 if (!is_elf_hash_table (link_info->hash))
3008 return FALSE;
3009
c1d11331 3010 /* Nothing to do if there is no need or no output. */
daa67607 3011 if ((sec->flags & (SEC_CODE | SEC_RELOC)) != (SEC_CODE | SEC_RELOC)
56ceb5b5 3012 || sec->need_convert_load == 0
c8831961 3013 || bfd_is_abs_section (sec->output_section))
daa67607
L
3014 return TRUE;
3015
3016 symtab_hdr = &elf_tdata (abfd)->symtab_hdr;
3017
3018 /* Load the relocations for this section. */
3019 internal_relocs = (_bfd_elf_link_read_relocs
3020 (abfd, sec, NULL, (Elf_Internal_Rela *) NULL,
3021 link_info->keep_memory));
3022 if (internal_relocs == NULL)
3023 return FALSE;
3024
3025 htab = elf_x86_64_hash_table (link_info);
3026 changed_contents = FALSE;
3027 changed_relocs = FALSE;
3028 local_got_refcounts = elf_local_got_refcounts (abfd);
59cab532 3029 maxpagesize = get_elf_backend_data (abfd)->maxpagesize;
daa67607
L
3030
3031 /* Get the section contents. */
3032 if (elf_section_data (sec)->this_hdr.contents != NULL)
3033 contents = elf_section_data (sec)->this_hdr.contents;
3034 else
3035 {
3036 if (!bfd_malloc_and_get_section (abfd, sec, &contents))
3037 goto error_return;
3038 }
3039
3040 irelend = internal_relocs + sec->reloc_count;
3041 for (irel = internal_relocs; irel < irelend; irel++)
3042 {
3043 unsigned int r_type = ELF32_R_TYPE (irel->r_info);
3044 unsigned int r_symndx = htab->r_sym (irel->r_info);
3045 unsigned int indx;
3046 struct elf_link_hash_entry *h;
59cab532
L
3047 asection *tsec;
3048 char symtype;
3049 bfd_vma toff, roff;
56ceb5b5 3050 bfd_signed_vma raddend;
dfc87947 3051 unsigned int opcode;
56ceb5b5 3052 unsigned int modrm;
daa67607 3053
56ceb5b5
L
3054 if (r_type != R_X86_64_GOTPCREL
3055 && r_type != R_X86_64_GOTPCRELX
3056 && r_type != R_X86_64_REX_GOTPCRELX)
daa67607
L
3057 continue;
3058
59cab532 3059 roff = irel->r_offset;
56ceb5b5
L
3060 if (roff < (r_type == R_X86_64_REX_GOTPCRELX ? 3 : 2))
3061 continue;
59cab532 3062
56ceb5b5
L
3063 raddend = irel->r_addend;
3064 /* Addend for 32-bit PC-relative relocation must be -4. */
3065 if (raddend != -4)
dfc87947
L
3066 continue;
3067
3068 opcode = bfd_get_8 (abfd, contents + roff - 2);
3069
56ceb5b5 3070 /* It is OK to convert mov to lea. */
dfc87947 3071 if (opcode != 0x8b)
56ceb5b5
L
3072 {
3073 /* Only convert R_X86_64_GOTPCRELX and R_X86_64_REX_GOTPCRELX
3074 for mov call, jmp or one of adc, add, and, cmp, or, sbb,
3075 sub, test, xor instructions. */
3076 if (r_type != R_X86_64_GOTPCRELX
3077 && r_type != R_X86_64_REX_GOTPCRELX)
3078 continue;
3079
3080 /* It is OK to convert indirect branch to direct branch. */
3081 if (opcode != 0xff)
3082 {
3083 /* It is OK to convert adc, add, and, cmp, or, sbb, sub,
3084 test, xor only when PIC is false. */
3085 if (bfd_link_pic (link_info))
3086 continue;
3087 }
3088 }
59cab532 3089
daa67607
L
3090 /* Get the symbol referred to by the reloc. */
3091 if (r_symndx < symtab_hdr->sh_info)
3092 {
3093 Elf_Internal_Sym *isym;
3094
3095 isym = bfd_sym_from_r_symndx (&htab->sym_cache,
3096 abfd, r_symndx);
3097
59cab532
L
3098 symtype = ELF_ST_TYPE (isym->st_info);
3099
56ceb5b5
L
3100 /* STT_GNU_IFUNC must keep GOTPCREL relocations and skip
3101 relocation against undefined symbols. */
77697d41
L
3102 if (symtype == STT_GNU_IFUNC || isym->st_shndx == SHN_UNDEF)
3103 continue;
59cab532 3104
77697d41
L
3105 if (isym->st_shndx == SHN_ABS)
3106 tsec = bfd_abs_section_ptr;
3107 else if (isym->st_shndx == SHN_COMMON)
3108 tsec = bfd_com_section_ptr;
3109 else if (isym->st_shndx == SHN_X86_64_LCOMMON)
3110 tsec = &_bfd_elf_large_com_section;
3111 else
3112 tsec = bfd_section_from_elf_index (abfd, isym->st_shndx);
3113
3114 h = NULL;
3115 toff = isym->st_value;
59cab532
L
3116 }
3117 else
3118 {
a6af384b
L
3119 bfd_boolean defined;
3120
59cab532
L
3121 indx = r_symndx - symtab_hdr->sh_info;
3122 h = elf_sym_hashes (abfd)[indx];
3123 BFD_ASSERT (h != NULL);
3124
3125 while (h->root.type == bfd_link_hash_indirect
3126 || h->root.type == bfd_link_hash_warning)
3127 h = (struct elf_link_hash_entry *) h->root.u.i.link;
3128
a6af384b
L
3129 defined = bfd_link_get_defined_symbol (link_info, &h->root,
3130 &tsec, &toff);
3131
56ceb5b5
L
3132 /* STT_GNU_IFUNC must keep GOTPCREL relocations. We also
3133 avoid optimizing GOTPCREL relocations againt _DYNAMIC
3134 since ld.so may use its link-time address. */
a6af384b 3135 if (defined
75a06c79 3136 && h->type != STT_GNU_IFUNC
59cab532
L
3137 && h != htab->elf.hdynamic
3138 && SYMBOL_REFERENCES_LOCAL (link_info, h))
a6af384b 3139 symtype = h->type;
77697d41
L
3140 else
3141 continue;
59cab532
L
3142 }
3143
59cab532
L
3144 if (tsec->sec_info_type == SEC_INFO_TYPE_MERGE)
3145 {
3146 /* At this stage in linking, no SEC_MERGE symbol has been
3147 adjusted, so all references to such symbols need to be
3148 passed through _bfd_merged_section_offset. (Later, in
3149 relocate_section, all SEC_MERGE symbols *except* for
3150 section symbols have been adjusted.)
3151
3152 gas may reduce relocations against symbols in SEC_MERGE
3153 sections to a relocation against the section symbol when
3154 the original addend was zero. When the reloc is against
3155 a section symbol we should include the addend in the
3156 offset passed to _bfd_merged_section_offset, since the
3157 location of interest is the original symbol. On the
3158 other hand, an access to "sym+addend" where "sym" is not
3159 a section symbol should not include the addend; Such an
3160 access is presumed to be an offset from "sym"; The
3161 location of interest is just "sym". */
3162 if (symtype == STT_SECTION)
56ceb5b5 3163 toff += raddend;
59cab532
L
3164
3165 toff = _bfd_merged_section_offset (abfd, &tsec,
3166 elf_section_data (tsec)->sec_info,
3167 toff);
3168
3169 if (symtype != STT_SECTION)
56ceb5b5 3170 toff += raddend;
59cab532
L
3171 }
3172 else
56ceb5b5 3173 toff += raddend;
59cab532
L
3174
3175 /* Don't convert if R_X86_64_PC32 relocation overflows. */
3176 if (tsec->output_section == sec->output_section)
3177 {
3178 if ((toff - roff + 0x80000000) > 0xffffffff)
3179 continue;
3180 }
3181 else
3182 {
3183 asection *asect;
3184 bfd_size_type size;
3185
3186 /* At this point, we don't know the load addresses of TSEC
3187 section nor SEC section. We estimate the distrance between
3188 SEC and TSEC. */
3189 size = 0;
3190 for (asect = sec->output_section;
3191 asect != NULL && asect != tsec->output_section;
3192 asect = asect->next)
3193 {
3194 asection *i;
3195 for (i = asect->output_section->map_head.s;
3196 i != NULL;
3197 i = i->map_head.s)
3198 {
3199 size = align_power (size, i->alignment_power);
3200 size += i->size;
3201 }
daa67607 3202 }
59cab532 3203
56ceb5b5
L
3204 /* Don't convert GOTPCREL relocations if TSEC isn't placed
3205 after SEC. */
59cab532
L
3206 if (asect == NULL)
3207 continue;
3208
3209 /* Take PT_GNU_RELRO segment into account by adding
3210 maxpagesize. */
3211 if ((toff + size + maxpagesize - roff + 0x80000000)
3212 > 0xffffffff)
3213 continue;
daa67607
L
3214 }
3215
56ceb5b5
L
3216 if (opcode == 0xff)
3217 {
3218 /* We have "call/jmp *foo@GOTPCREL(%rip)". */
3219 unsigned int nop;
caa65211 3220 unsigned int disp;
56ceb5b5
L
3221 bfd_vma nop_offset;
3222
3223 /* Convert R_X86_64_GOTPCRELX and R_X86_64_REX_GOTPCRELX to
3224 R_X86_64_PC32. */
3225 modrm = bfd_get_8 (abfd, contents + roff - 1);
3226 if (modrm == 0x25)
3227 {
56ceb5b5
L
3228 /* Convert to "jmp foo nop". */
3229 modrm = 0xe9;
3230 nop = NOP_OPCODE;
3231 nop_offset = irel->r_offset + 3;
3232 disp = bfd_get_32 (abfd, contents + irel->r_offset);
3233 irel->r_offset -= 1;
3234 bfd_put_32 (abfd, disp, contents + irel->r_offset);
3235 }
3236 else
3237 {
3238 /* Convert to "nop call foo". ADDR_PREFIX_OPCODE
3239 is a nop prefix. */
3240 modrm = 0xe8;
caa65211
L
3241 nop = link_info->call_nop_byte;
3242 if (link_info->call_nop_as_suffix)
3243 {
3244 nop_offset = irel->r_offset + 3;
3245 disp = bfd_get_32 (abfd, contents + irel->r_offset);
3246 irel->r_offset -= 1;
3247 bfd_put_32 (abfd, disp, contents + irel->r_offset);
3248 }
3249 else
3250 nop_offset = irel->r_offset - 2;
56ceb5b5
L
3251 }
3252 bfd_put_8 (abfd, nop, contents + nop_offset);
3253 bfd_put_8 (abfd, modrm, contents + irel->r_offset - 1);
3254 r_type = R_X86_64_PC32;
3255 }
3256 else
3257 {
3258 if (opcode == 0x8b)
3259 {
3260 /* Convert "mov foo@GOTPCREL(%rip), %reg" to
3261 "lea foo(%rip), %reg". */
3262 opcode = 0x8d;
3263 r_type = R_X86_64_PC32;
3264 }
3265 else
3266 {
3267 modrm = bfd_get_8 (abfd, contents + roff - 1);
3268 if (opcode == 0x85)
3269 {
3270 /* Convert "test %reg, foo@GOTPCREL(%rip)" to
3271 "test $foo, %reg". */
3272 modrm = 0xc0 | (modrm & 0x38) >> 3;
3273 opcode = 0xf7;
3274 }
3275 else
3276 {
3277 /* Convert "binop foo@GOTPCREL(%rip), %reg" to
3278 "binop $foo, %reg". */
3279 modrm = 0xc0 | (modrm & 0x38) >> 3 | (opcode & 0x3c);
3280 opcode = 0x81;
3281 }
3282 bfd_put_8 (abfd, modrm, contents + roff - 1);
3283
3284 if (r_type == R_X86_64_REX_GOTPCRELX)
3285 {
3286 /* Move the R bit to the B bit in REX byte. */
3287 unsigned int rex = bfd_get_8 (abfd, contents + roff - 3);
3288 rex = (rex & ~REX_R) | (rex & REX_R) >> 2;
3289 bfd_put_8 (abfd, rex, contents + roff - 3);
3290 }
3291 /* No addend for R_X86_64_32S relocation. */
3292 irel->r_addend = 0;
3293 r_type = R_X86_64_32S;
3294 }
3295
3296 bfd_put_8 (abfd, opcode, contents + roff - 2);
3297 }
3298
3299 irel->r_info = htab->r_info (r_symndx, r_type);
59cab532
L
3300 changed_contents = TRUE;
3301 changed_relocs = TRUE;
3302
77697d41 3303 if (h)
59cab532 3304 {
77697d41
L
3305 if (h->got.refcount > 0)
3306 h->got.refcount -= 1;
59cab532
L
3307 }
3308 else
daa67607 3309 {
77697d41
L
3310 if (local_got_refcounts != NULL
3311 && local_got_refcounts[r_symndx] > 0)
3312 local_got_refcounts[r_symndx] -= 1;
daa67607
L
3313 }
3314 }
3315
3316 if (contents != NULL
3317 && elf_section_data (sec)->this_hdr.contents != contents)
3318 {
3319 if (!changed_contents && !link_info->keep_memory)
3320 free (contents);
3321 else
3322 {
3323 /* Cache the section contents for elf_link_input_bfd. */
3324 elf_section_data (sec)->this_hdr.contents = contents;
3325 }
3326 }
3327
3328 if (elf_section_data (sec)->relocs != internal_relocs)
3329 {
3330 if (!changed_relocs)
3331 free (internal_relocs);
3332 else
3333 elf_section_data (sec)->relocs = internal_relocs;
3334 }
3335
3336 return TRUE;
3337
3338 error_return:
3339 if (contents != NULL
3340 && elf_section_data (sec)->this_hdr.contents != contents)
3341 free (contents);
3342 if (internal_relocs != NULL
3343 && elf_section_data (sec)->relocs != internal_relocs)
3344 free (internal_relocs);
3345 return FALSE;
3346}
3347
70256ad8
AJ
3348/* Set the sizes of the dynamic sections. */
3349
b34976b6 3350static bfd_boolean
351f65ca
L
3351elf_x86_64_size_dynamic_sections (bfd *output_bfd,
3352 struct bfd_link_info *info)
70256ad8 3353{
351f65ca 3354 struct elf_x86_64_link_hash_table *htab;
70256ad8
AJ
3355 bfd *dynobj;
3356 asection *s;
b34976b6 3357 bfd_boolean relocs;
c434dee6 3358 bfd *ibfd;
351f65ca 3359 const struct elf_backend_data *bed;
70256ad8 3360
351f65ca 3361 htab = elf_x86_64_hash_table (info);
4dfe6ac6
NC
3362 if (htab == NULL)
3363 return FALSE;
351f65ca 3364 bed = get_elf_backend_data (output_bfd);
4dfe6ac6 3365
c434dee6
AJ
3366 dynobj = htab->elf.dynobj;
3367 if (dynobj == NULL)
3368 abort ();
70256ad8 3369
c434dee6 3370 if (htab->elf.dynamic_sections_created)
70256ad8
AJ
3371 {
3372 /* Set the contents of the .interp section to the interpreter. */
9b8b325a 3373 if (bfd_link_executable (info) && !info->nointerp)
70256ad8 3374 {
3d4d4302 3375 s = bfd_get_linker_section (dynobj, ".interp");
c434dee6
AJ
3376 if (s == NULL)
3377 abort ();
351f65ca
L
3378 s->size = htab->dynamic_interpreter_size;
3379 s->contents = (unsigned char *) htab->dynamic_interpreter;
70256ad8
AJ
3380 }
3381 }
70256ad8 3382
c434dee6
AJ
3383 /* Set up .got offsets for local syms, and space for local dynamic
3384 relocs. */
c72f2fb2 3385 for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link.next)
70256ad8 3386 {
c434dee6
AJ
3387 bfd_signed_vma *local_got;
3388 bfd_signed_vma *end_local_got;
bffbf940 3389 char *local_tls_type;
67a4f2b7 3390 bfd_vma *local_tlsdesc_gotent;
c434dee6
AJ
3391 bfd_size_type locsymcount;
3392 Elf_Internal_Shdr *symtab_hdr;
3393 asection *srel;
70256ad8 3394
0ffa91dd 3395 if (! is_x86_64_elf (ibfd))
70256ad8
AJ
3396 continue;
3397
c434dee6 3398 for (s = ibfd->sections; s != NULL; s = s->next)
70256ad8 3399 {
e03a8ed8 3400 struct elf_dyn_relocs *p;
c434dee6 3401
56ceb5b5 3402 if (!elf_x86_64_convert_load (ibfd, s, info))
daa67607
L
3403 return FALSE;
3404
e03a8ed8 3405 for (p = (struct elf_dyn_relocs *)
e81d3500 3406 (elf_section_data (s)->local_dynrel);
c434dee6
AJ
3407 p != NULL;
3408 p = p->next)
70256ad8 3409 {
c434dee6
AJ
3410 if (!bfd_is_abs_section (p->sec)
3411 && bfd_is_abs_section (p->sec->output_section))
3412 {
3413 /* Input section has been discarded, either because
3414 it is a copy of a linkonce section or due to
3415 linker script /DISCARD/, so we'll be discarding
3416 the relocs too. */
3417 }
3418 else if (p->count != 0)
3419 {
3420 srel = elf_section_data (p->sec)->sreloc;
351f65ca 3421 srel->size += p->count * bed->s->sizeof_rela;
4b819e1f
L
3422 if ((p->sec->output_section->flags & SEC_READONLY) != 0
3423 && (info->flags & DF_TEXTREL) == 0)
b70321a2
L
3424 {
3425 info->flags |= DF_TEXTREL;
0e1862bb 3426 if ((info->warn_shared_textrel && bfd_link_pic (info))
1952c5cd
L
3427 || info->error_textrel)
3428 info->callbacks->einfo (_("%P: %B: warning: relocation in readonly section `%A'\n"),
b70321a2 3429 p->sec->owner, p->sec);
b70321a2 3430 }
c434dee6 3431 }
70256ad8
AJ
3432 }
3433 }
c434dee6
AJ
3434
3435 local_got = elf_local_got_refcounts (ibfd);
3436 if (!local_got)
3437 continue;
3438
0ffa91dd 3439 symtab_hdr = &elf_symtab_hdr (ibfd);
c434dee6
AJ
3440 locsymcount = symtab_hdr->sh_info;
3441 end_local_got = local_got + locsymcount;
351f65ca
L
3442 local_tls_type = elf_x86_64_local_got_tls_type (ibfd);
3443 local_tlsdesc_gotent = elf_x86_64_local_tlsdesc_gotent (ibfd);
6de2ae4a
L
3444 s = htab->elf.sgot;
3445 srel = htab->elf.srelgot;
67a4f2b7
AO
3446 for (; local_got < end_local_got;
3447 ++local_got, ++local_tls_type, ++local_tlsdesc_gotent)
70256ad8 3448 {
67a4f2b7 3449 *local_tlsdesc_gotent = (bfd_vma) -1;
c434dee6 3450 if (*local_got > 0)
70256ad8 3451 {
67a4f2b7
AO
3452 if (GOT_TLS_GDESC_P (*local_tls_type))
3453 {
6de2ae4a 3454 *local_tlsdesc_gotent = htab->elf.sgotplt->size
351f65ca 3455 - elf_x86_64_compute_jump_table_size (htab);
6de2ae4a 3456 htab->elf.sgotplt->size += 2 * GOT_ENTRY_SIZE;
67a4f2b7
AO
3457 *local_got = (bfd_vma) -2;
3458 }
3459 if (! GOT_TLS_GDESC_P (*local_tls_type)
3460 || GOT_TLS_GD_P (*local_tls_type))
3461 {
3462 *local_got = s->size;
3463 s->size += GOT_ENTRY_SIZE;
3464 if (GOT_TLS_GD_P (*local_tls_type))
3465 s->size += GOT_ENTRY_SIZE;
3466 }
0e1862bb 3467 if (bfd_link_pic (info)
67a4f2b7 3468 || GOT_TLS_GD_ANY_P (*local_tls_type)
bffbf940 3469 || *local_tls_type == GOT_TLS_IE)
67a4f2b7
AO
3470 {
3471 if (GOT_TLS_GDESC_P (*local_tls_type))
3472 {
6de2ae4a 3473 htab->elf.srelplt->size
351f65ca 3474 += bed->s->sizeof_rela;
67a4f2b7
AO
3475 htab->tlsdesc_plt = (bfd_vma) -1;
3476 }
3477 if (! GOT_TLS_GDESC_P (*local_tls_type)
3478 || GOT_TLS_GD_P (*local_tls_type))
351f65ca 3479 srel->size += bed->s->sizeof_rela;
67a4f2b7 3480 }
70256ad8
AJ
3481 }
3482 else
c434dee6
AJ
3483 *local_got = (bfd_vma) -1;
3484 }
3485 }
70256ad8 3486
bffbf940
JJ
3487 if (htab->tls_ld_got.refcount > 0)
3488 {
3489 /* Allocate 2 got entries and 1 dynamic reloc for R_X86_64_TLSLD
3490 relocs. */
6de2ae4a
L
3491 htab->tls_ld_got.offset = htab->elf.sgot->size;
3492 htab->elf.sgot->size += 2 * GOT_ENTRY_SIZE;
351f65ca 3493 htab->elf.srelgot->size += bed->s->sizeof_rela;
bffbf940
JJ
3494 }
3495 else
3496 htab->tls_ld_got.offset = -1;
3497
c434dee6
AJ
3498 /* Allocate global sym .plt and .got entries, and space for global
3499 sym dynamic relocs. */
351f65ca 3500 elf_link_hash_traverse (&htab->elf, elf_x86_64_allocate_dynrelocs,
eb4ff4d6 3501 info);
c434dee6 3502
c25bc9fc
L
3503 /* Allocate .plt and .got entries, and space for local symbols. */
3504 htab_traverse (htab->loc_hash_table,
351f65ca 3505 elf_x86_64_allocate_local_dynrelocs,
c25bc9fc
L
3506 info);
3507
67a4f2b7
AO
3508 /* For every jump slot reserved in the sgotplt, reloc_count is
3509 incremented. However, when we reserve space for TLS descriptors,
3510 it's not incremented, so in order to compute the space reserved
3511 for them, it suffices to multiply the reloc count by the jump
e1f98742
L
3512 slot size.
3513
3514 PR ld/13302: We start next_irelative_index at the end of .rela.plt
3515 so that R_X86_64_IRELATIVE entries come last. */
6de2ae4a 3516 if (htab->elf.srelplt)
e1f98742
L
3517 {
3518 htab->sgotplt_jump_table_size
3519 = elf_x86_64_compute_jump_table_size (htab);
3520 htab->next_irelative_index = htab->elf.srelplt->reloc_count - 1;
3521 }
3522 else if (htab->elf.irelplt)
3523 htab->next_irelative_index = htab->elf.irelplt->reloc_count - 1;
67a4f2b7
AO
3524
3525 if (htab->tlsdesc_plt)
3526 {
3527 /* If we're not using lazy TLS relocations, don't generate the
3528 PLT and GOT entries they require. */
3529 if ((info->flags & DF_BIND_NOW))
3530 htab->tlsdesc_plt = 0;
3531 else
3532 {
6de2ae4a
L
3533 htab->tlsdesc_got = htab->elf.sgot->size;
3534 htab->elf.sgot->size += GOT_ENTRY_SIZE;
67a4f2b7
AO
3535 /* Reserve room for the initial entry.
3536 FIXME: we could probably do away with it in this case. */
6de2ae4a 3537 if (htab->elf.splt->size == 0)
eed180f8 3538 htab->elf.splt->size += GET_PLT_ENTRY_SIZE (output_bfd);
6de2ae4a 3539 htab->tlsdesc_plt = htab->elf.splt->size;
eed180f8 3540 htab->elf.splt->size += GET_PLT_ENTRY_SIZE (output_bfd);
67a4f2b7
AO
3541 }
3542 }
3543
a7b16ceb
L
3544 if (htab->elf.sgotplt)
3545 {
3546 /* Don't allocate .got.plt section if there are no GOT nor PLT
eed180f8 3547 entries and there is no refeence to _GLOBAL_OFFSET_TABLE_. */
9d4b2dba
L
3548 if ((htab->elf.hgot == NULL
3549 || !htab->elf.hgot->ref_regular_nonweak)
e28df02b
L
3550 && (htab->elf.sgotplt->size
3551 == get_elf_backend_data (output_bfd)->got_header_size)
a7b16ceb
L
3552 && (htab->elf.splt == NULL
3553 || htab->elf.splt->size == 0)
3554 && (htab->elf.sgot == NULL
3555 || htab->elf.sgot->size == 0)
3556 && (htab->elf.iplt == NULL
3557 || htab->elf.iplt->size == 0)
3558 && (htab->elf.igotplt == NULL
3559 || htab->elf.igotplt->size == 0))
3560 htab->elf.sgotplt->size = 0;
3561 }
3562
9a2a56cc
AM
3563 if (htab->plt_eh_frame != NULL
3564 && htab->elf.splt != NULL
3565 && htab->elf.splt->size != 0
3566 && !bfd_is_abs_section (htab->elf.splt->output_section)
3567 && _bfd_elf_eh_frame_present (info))
3568 {
3569 const struct elf_x86_64_backend_data *arch_data
f8222080 3570 = get_elf_x86_64_arch_data (bed);
9a2a56cc
AM
3571 htab->plt_eh_frame->size = arch_data->eh_frame_plt_size;
3572 }
3573
c434dee6
AJ
3574 /* We now have determined the sizes of the various dynamic sections.
3575 Allocate memory for them. */
b34976b6 3576 relocs = FALSE;
c434dee6
AJ
3577 for (s = dynobj->sections; s != NULL; s = s->next)
3578 {
3579 if ((s->flags & SEC_LINKER_CREATED) == 0)
3580 continue;
3581
6de2ae4a
L
3582 if (s == htab->elf.splt
3583 || s == htab->elf.sgot
3584 || s == htab->elf.sgotplt
3585 || s == htab->elf.iplt
3586 || s == htab->elf.igotplt
0ff2b86e 3587 || s == htab->plt_bnd
dd7e64d4 3588 || s == htab->plt_got
9a2a56cc 3589 || s == htab->plt_eh_frame
75ff4589 3590 || s == htab->sdynbss)
c434dee6
AJ
3591 {
3592 /* Strip this section if we don't need it; see the
3593 comment below. */
3594 }
0112cd26 3595 else if (CONST_STRNEQ (bfd_get_section_name (dynobj, s), ".rela"))
c434dee6 3596 {
6de2ae4a 3597 if (s->size != 0 && s != htab->elf.srelplt)
b34976b6 3598 relocs = TRUE;
c434dee6
AJ
3599
3600 /* We use the reloc_count field as a counter if we need
3601 to copy relocs into the output file. */
6de2ae4a 3602 if (s != htab->elf.srelplt)
67a4f2b7 3603 s->reloc_count = 0;
70256ad8 3604 }
c434dee6 3605 else
70256ad8
AJ
3606 {
3607 /* It's not one of our sections, so don't allocate space. */
3608 continue;
3609 }
3610
eea6121a 3611 if (s->size == 0)
70256ad8 3612 {
c434dee6
AJ
3613 /* If we don't need this section, strip it from the
3614 output file. This is mostly to handle .rela.bss and
3615 .rela.plt. We must create both sections in
3616 create_dynamic_sections, because they must be created
3617 before the linker maps input sections to output
3618 sections. The linker does that before
3619 adjust_dynamic_symbol is called, and it is that
3620 function which decides whether anything needs to go
3621 into these sections. */
3622
8423293d 3623 s->flags |= SEC_EXCLUDE;
70256ad8
AJ
3624 continue;
3625 }
3626
c456f082
AM
3627 if ((s->flags & SEC_HAS_CONTENTS) == 0)
3628 continue;
3629
70256ad8
AJ
3630 /* Allocate memory for the section contents. We use bfd_zalloc
3631 here in case unused entries are not reclaimed before the
3632 section's contents are written out. This should not happen,
3633 but this way if it does, we get a R_X86_64_NONE reloc instead
3634 of garbage. */
eea6121a 3635 s->contents = (bfd_byte *) bfd_zalloc (dynobj, s->size);
c434dee6 3636 if (s->contents == NULL)
b34976b6 3637 return FALSE;
70256ad8
AJ
3638 }
3639
e41b3a13 3640 if (htab->plt_eh_frame != NULL
9a2a56cc
AM
3641 && htab->plt_eh_frame->contents != NULL)
3642 {
3643 const struct elf_x86_64_backend_data *arch_data
f8222080 3644 = get_elf_x86_64_arch_data (bed);
9a2a56cc
AM
3645
3646 memcpy (htab->plt_eh_frame->contents,
3647 arch_data->eh_frame_plt, htab->plt_eh_frame->size);
3648 bfd_put_32 (dynobj, htab->elf.splt->size,
3649 htab->plt_eh_frame->contents + PLT_FDE_LEN_OFFSET);
3650 }
e41b3a13 3651
c434dee6 3652 if (htab->elf.dynamic_sections_created)
70256ad8
AJ
3653 {
3654 /* Add some entries to the .dynamic section. We fill in the
351f65ca 3655 values later, in elf_x86_64_finish_dynamic_sections, but we
70256ad8 3656 must add the entries now so that we get the correct size for
407443a3 3657 the .dynamic section. The DT_DEBUG entry is filled in by the
70256ad8 3658 dynamic linker and used by the debugger. */
dc810e39 3659#define add_dynamic_entry(TAG, VAL) \
5a580b3a 3660 _bfd_elf_add_dynamic_entry (info, TAG, VAL)
dc810e39 3661
0e1862bb 3662 if (bfd_link_executable (info))
70256ad8 3663 {
dc810e39 3664 if (!add_dynamic_entry (DT_DEBUG, 0))
b34976b6 3665 return FALSE;
70256ad8
AJ
3666 }
3667
6de2ae4a 3668 if (htab->elf.splt->size != 0)
70256ad8 3669 {
7c1e8d3e
L
3670 /* DT_PLTGOT is used by prelink even if there is no PLT
3671 relocation. */
3672 if (!add_dynamic_entry (DT_PLTGOT, 0))
b34976b6 3673 return FALSE;
67a4f2b7 3674
7c1e8d3e
L
3675 if (htab->elf.srelplt->size != 0)
3676 {
3677 if (!add_dynamic_entry (DT_PLTRELSZ, 0)
3678 || !add_dynamic_entry (DT_PLTREL, DT_RELA)
3679 || !add_dynamic_entry (DT_JMPREL, 0))
3680 return FALSE;
3681 }
3682
67a4f2b7
AO
3683 if (htab->tlsdesc_plt
3684 && (!add_dynamic_entry (DT_TLSDESC_PLT, 0)
3685 || !add_dynamic_entry (DT_TLSDESC_GOT, 0)))
3686 return FALSE;
70256ad8
AJ
3687 }
3688
3689 if (relocs)
3690 {
dc810e39
AM
3691 if (!add_dynamic_entry (DT_RELA, 0)
3692 || !add_dynamic_entry (DT_RELASZ, 0)
351f65ca 3693 || !add_dynamic_entry (DT_RELAENT, bed->s->sizeof_rela))
b34976b6 3694 return FALSE;
70256ad8 3695
c434dee6
AJ
3696 /* If any dynamic relocs apply to a read-only section,
3697 then we need a DT_TEXTREL entry. */
3698 if ((info->flags & DF_TEXTREL) == 0)
eed180f8 3699 elf_link_hash_traverse (&htab->elf,
351f65ca 3700 elf_x86_64_readonly_dynrelocs,
eb4ff4d6 3701 info);
c434dee6
AJ
3702
3703 if ((info->flags & DF_TEXTREL) != 0)
3704 {
8efa2874
L
3705 if ((elf_tdata (output_bfd)->has_gnu_symbols
3706 & elf_gnu_symbol_ifunc) == elf_gnu_symbol_ifunc)
3707 {
3708 info->callbacks->einfo
3709 (_("%P%X: read-only segment has dynamic IFUNC relocations; recompile with -fPIC\n"));
3710 bfd_set_error (bfd_error_bad_value);
3711 return FALSE;
3712 }
3713
c434dee6 3714 if (!add_dynamic_entry (DT_TEXTREL, 0))
b34976b6 3715 return FALSE;
c434dee6 3716 }
70256ad8
AJ
3717 }
3718 }
dc810e39 3719#undef add_dynamic_entry
70256ad8 3720
b34976b6 3721 return TRUE;
70256ad8
AJ
3722}
3723
67a4f2b7 3724static bfd_boolean
351f65ca
L
3725elf_x86_64_always_size_sections (bfd *output_bfd,
3726 struct bfd_link_info *info)
67a4f2b7
AO
3727{
3728 asection *tls_sec = elf_hash_table (info)->tls_sec;
3729
3730 if (tls_sec)
3731 {
3732 struct elf_link_hash_entry *tlsbase;
3733
3734 tlsbase = elf_link_hash_lookup (elf_hash_table (info),
3735 "_TLS_MODULE_BASE_",
3736 FALSE, FALSE, FALSE);
3737
3738 if (tlsbase && tlsbase->type == STT_TLS)
3739 {
351f65ca 3740 struct elf_x86_64_link_hash_table *htab;
67a4f2b7
AO
3741 struct bfd_link_hash_entry *bh = NULL;
3742 const struct elf_backend_data *bed
3743 = get_elf_backend_data (output_bfd);
3744
351f65ca 3745 htab = elf_x86_64_hash_table (info);
4dfe6ac6
NC
3746 if (htab == NULL)
3747 return FALSE;
3748
67a4f2b7
AO
3749 if (!(_bfd_generic_link_add_one_symbol
3750 (info, output_bfd, "_TLS_MODULE_BASE_", BSF_LOCAL,
3751 tls_sec, 0, NULL, FALSE,
3752 bed->collect, &bh)))
3753 return FALSE;
9f03412a 3754
4dfe6ac6 3755 htab->tls_module_base = bh;
9f03412a 3756
67a4f2b7
AO
3757 tlsbase = (struct elf_link_hash_entry *)bh;
3758 tlsbase->def_regular = 1;
3759 tlsbase->other = STV_HIDDEN;
576fa883 3760 tlsbase->root.linker_def = 1;
67a4f2b7
AO
3761 (*bed->elf_backend_hide_symbol) (info, tlsbase, TRUE);
3762 }
3763 }
3764
3765 return TRUE;
3766}
3767
9f03412a
AO
3768/* _TLS_MODULE_BASE_ needs to be treated especially when linking
3769 executables. Rather than setting it to the beginning of the TLS
3770 section, we have to set it to the end. This function may be called
3771 multiple times, it is idempotent. */
3772
3773static void
351f65ca 3774elf_x86_64_set_tls_module_base (struct bfd_link_info *info)
9f03412a 3775{
351f65ca 3776 struct elf_x86_64_link_hash_table *htab;
9f03412a
AO
3777 struct bfd_link_hash_entry *base;
3778
0e1862bb 3779 if (!bfd_link_executable (info))
9f03412a
AO
3780 return;
3781
351f65ca 3782 htab = elf_x86_64_hash_table (info);
4dfe6ac6
NC
3783 if (htab == NULL)
3784 return;
9f03412a 3785
4dfe6ac6
NC
3786 base = htab->tls_module_base;
3787 if (base == NULL)
9f03412a
AO
3788 return;
3789
4dfe6ac6 3790 base->u.def.value = htab->elf.tls_size;
9f03412a
AO
3791}
3792
bffbf940
JJ
3793/* Return the base VMA address which should be subtracted from real addresses
3794 when resolving @dtpoff relocation.
3795 This is PT_TLS segment p_vaddr. */
3796
3797static bfd_vma
351f65ca 3798elf_x86_64_dtpoff_base (struct bfd_link_info *info)
bffbf940 3799{
e1918d23
AM
3800 /* If tls_sec is NULL, we should have signalled an error already. */
3801 if (elf_hash_table (info)->tls_sec == NULL)
bffbf940 3802 return 0;
e1918d23 3803 return elf_hash_table (info)->tls_sec->vma;
bffbf940
JJ
3804}
3805
3806/* Return the relocation value for @tpoff relocation
3807 if STT_TLS virtual address is ADDRESS. */
3808
3809static bfd_vma
351f65ca 3810elf_x86_64_tpoff (struct bfd_link_info *info, bfd_vma address)
bffbf940 3811{
e1918d23 3812 struct elf_link_hash_table *htab = elf_hash_table (info);
7dc98aea
RO
3813 const struct elf_backend_data *bed = get_elf_backend_data (info->output_bfd);
3814 bfd_vma static_tls_size;
bffbf940
JJ
3815
3816 /* If tls_segment is NULL, we should have signalled an error already. */
e1918d23 3817 if (htab->tls_sec == NULL)
bffbf940 3818 return 0;
7dc98aea
RO
3819
3820 /* Consider special static TLS alignment requirements. */
3821 static_tls_size = BFD_ALIGN (htab->tls_size, bed->static_tls_alignment);
3822 return address - static_tls_size - htab->tls_sec->vma;
bffbf940
JJ
3823}
3824
90f487df
L
3825/* Is the instruction before OFFSET in CONTENTS a 32bit relative
3826 branch? */
3827
3828static bfd_boolean
3829is_32bit_relative_branch (bfd_byte *contents, bfd_vma offset)
3830{
3831 /* Opcode Instruction
3832 0xe8 call
3833 0xe9 jump
3834 0x0f 0x8x conditional jump */
3835 return ((offset > 0
3836 && (contents [offset - 1] == 0xe8
3837 || contents [offset - 1] == 0xe9))
3838 || (offset > 1
3839 && contents [offset - 2] == 0x0f
3840 && (contents [offset - 1] & 0xf0) == 0x80));
3841}
3842
8d88c4ca
NC
3843/* Relocate an x86_64 ELF section. */
3844
b34976b6 3845static bfd_boolean
351f65ca
L
3846elf_x86_64_relocate_section (bfd *output_bfd,
3847 struct bfd_link_info *info,
3848 bfd *input_bfd,
3849 asection *input_section,
3850 bfd_byte *contents,
3851 Elf_Internal_Rela *relocs,
3852 Elf_Internal_Sym *local_syms,
3853 asection **local_sections)
8d88c4ca 3854{
351f65ca 3855 struct elf_x86_64_link_hash_table *htab;
8d88c4ca
NC
3856 Elf_Internal_Shdr *symtab_hdr;
3857 struct elf_link_hash_entry **sym_hashes;
3858 bfd_vma *local_got_offsets;
67a4f2b7 3859 bfd_vma *local_tlsdesc_gotents;
c434dee6 3860 Elf_Internal_Rela *rel;
8d88c4ca 3861 Elf_Internal_Rela *relend;
eed180f8 3862 const unsigned int plt_entry_size = GET_PLT_ENTRY_SIZE (info->output_bfd);
8d88c4ca 3863
0ffa91dd
NC
3864 BFD_ASSERT (is_x86_64_elf (input_bfd));
3865
351f65ca 3866 htab = elf_x86_64_hash_table (info);
4dfe6ac6
NC
3867 if (htab == NULL)
3868 return FALSE;
0ffa91dd 3869 symtab_hdr = &elf_symtab_hdr (input_bfd);
8d88c4ca
NC
3870 sym_hashes = elf_sym_hashes (input_bfd);
3871 local_got_offsets = elf_local_got_offsets (input_bfd);
351f65ca 3872 local_tlsdesc_gotents = elf_x86_64_local_tlsdesc_gotent (input_bfd);
8d88c4ca 3873
351f65ca 3874 elf_x86_64_set_tls_module_base (info);
9f03412a 3875
c434dee6 3876 rel = relocs;
8d88c4ca 3877 relend = relocs + input_section->reloc_count;
c434dee6 3878 for (; rel < relend; rel++)
8d88c4ca 3879 {
bffbf940 3880 unsigned int r_type;
8d88c4ca
NC
3881 reloc_howto_type *howto;
3882 unsigned long r_symndx;
3883 struct elf_link_hash_entry *h;
0ff2b86e 3884 struct elf_x86_64_link_hash_entry *eh;
8d88c4ca
NC
3885 Elf_Internal_Sym *sym;
3886 asection *sec;
0ff2b86e 3887 bfd_vma off, offplt, plt_offset;
8d88c4ca 3888 bfd_vma relocation;
b34976b6 3889 bfd_boolean unresolved_reloc;
8d88c4ca 3890 bfd_reloc_status_type r;
bffbf940 3891 int tls_type;
0ff2b86e 3892 asection *base_got, *resolved_plt;
1788fc08 3893 bfd_vma st_size;
8d88c4ca 3894
351f65ca 3895 r_type = ELF32_R_TYPE (rel->r_info);
fe4770f4
AJ
3896 if (r_type == (int) R_X86_64_GNU_VTINHERIT
3897 || r_type == (int) R_X86_64_GNU_VTENTRY)
3898 continue;
8d88c4ca 3899
9911c0fc 3900 if (r_type >= (int) R_X86_64_standard)
8da6118f 3901 {
9911c0fc
L
3902 (*_bfd_error_handler)
3903 (_("%B: unrecognized relocation (0x%x) in section `%A'"),
3904 input_bfd, input_section, r_type);
8da6118f 3905 bfd_set_error (bfd_error_bad_value);
b34976b6 3906 return FALSE;
8da6118f 3907 }
8d88c4ca 3908
d7921315 3909 if (r_type != (int) R_X86_64_32
eed180f8 3910 || ABI_64_P (output_bfd))
d7921315
L
3911 howto = x86_64_elf_howto_table + r_type;
3912 else
3913 howto = (x86_64_elf_howto_table
3914 + ARRAY_SIZE (x86_64_elf_howto_table) - 1);
351f65ca 3915 r_symndx = htab->r_sym (rel->r_info);
8d88c4ca
NC
3916 h = NULL;
3917 sym = NULL;
3918 sec = NULL;
b34976b6 3919 unresolved_reloc = FALSE;
8d88c4ca 3920 if (r_symndx < symtab_hdr->sh_info)
8da6118f
KH
3921 {
3922 sym = local_syms + r_symndx;
3923 sec = local_sections[r_symndx];
c434dee6 3924
c25bc9fc
L
3925 relocation = _bfd_elf_rela_local_sym (output_bfd, sym,
3926 &sec, rel);
1788fc08 3927 st_size = sym->st_size;
c25bc9fc
L
3928
3929 /* Relocate against local STT_GNU_IFUNC symbol. */
0e1862bb 3930 if (!bfd_link_relocatable (info)
351f65ca 3931 && ELF_ST_TYPE (sym->st_info) == STT_GNU_IFUNC)
c25bc9fc 3932 {
351f65ca
L
3933 h = elf_x86_64_get_local_sym_hash (htab, input_bfd,
3934 rel, FALSE);
c25bc9fc
L
3935 if (h == NULL)
3936 abort ();
3937
eed180f8 3938 /* Set STT_GNU_IFUNC symbol value. */
c25bc9fc
L
3939 h->root.u.def.value = sym->st_value;
3940 h->root.u.def.section = sec;
3941 }
8da6118f 3942 }
8d88c4ca 3943 else
8da6118f 3944 {
c9736ba0 3945 bfd_boolean warned ATTRIBUTE_UNUSED;
62d887d4 3946 bfd_boolean ignored ATTRIBUTE_UNUSED;
c434dee6 3947
b2a8e766
AM
3948 RELOC_FOR_GLOBAL_SYMBOL (info, input_bfd, input_section, rel,
3949 r_symndx, symtab_hdr, sym_hashes,
3950 h, sec, relocation,
62d887d4 3951 unresolved_reloc, warned, ignored);
1788fc08 3952 st_size = h->size;
8da6118f 3953 }
ab96bf03 3954
dbaa2011 3955 if (sec != NULL && discarded_section (sec))
0672748a 3956 RELOC_AGAINST_DISCARDED_SECTION (info, input_bfd, input_section,
545fd46b 3957 rel, 1, relend, howto, 0, contents);
ab96bf03 3958
0e1862bb 3959 if (bfd_link_relocatable (info))
ab96bf03
AM
3960 continue;
3961
1788fc08 3962 if (rel->r_addend == 0 && !ABI_64_P (output_bfd))
64d25c44 3963 {
1788fc08
L
3964 if (r_type == R_X86_64_64)
3965 {
3966 /* For x32, treat R_X86_64_64 like R_X86_64_32 and
3967 zero-extend it to 64bit if addend is zero. */
3968 r_type = R_X86_64_32;
3969 memset (contents + rel->r_offset + 4, 0, 4);
3970 }
3971 else if (r_type == R_X86_64_SIZE64)
3972 {
3973 /* For x32, treat R_X86_64_SIZE64 like R_X86_64_SIZE32 and
3974 zero-extend it to 64bit if addend is zero. */
3975 r_type = R_X86_64_SIZE32;
3976 memset (contents + rel->r_offset + 4, 0, 4);
3977 }
64d25c44
L
3978 }
3979
0ff2b86e
L
3980 eh = (struct elf_x86_64_link_hash_entry *) h;
3981
cbe950e9
L
3982 /* Since STT_GNU_IFUNC symbol must go through PLT, we handle
3983 it here if it is defined in a non-shared object. */
3984 if (h != NULL
3985 && h->type == STT_GNU_IFUNC
3986 && h->def_regular)
3987 {
cbe950e9 3988 bfd_vma plt_index;
4c544807 3989 const char *name;
cbe950e9 3990
97dc35c8
L
3991 if ((input_section->flags & SEC_ALLOC) == 0)
3992 {
3993 /* Dynamic relocs are not propagated for SEC_DEBUGGING
3994 sections because such sections are not SEC_ALLOC and
3995 thus ld.so will not process them. */
3996 if ((input_section->flags & SEC_DEBUGGING) != 0)
0eace210 3997 continue;
97dc35c8
L
3998 abort ();
3999 }
4000 else if (h->plt.offset == (bfd_vma) -1)
cbe950e9
L
4001 abort ();
4002
4003 /* STT_GNU_IFUNC symbol must go through PLT. */
0ff2b86e
L
4004 if (htab->elf.splt != NULL)
4005 {
4006 if (htab->plt_bnd != NULL)
4007 {
4008 resolved_plt = htab->plt_bnd;
4009 plt_offset = eh->plt_bnd.offset;
4010 }
4011 else
4012 {
4013 resolved_plt = htab->elf.splt;
4014 plt_offset = h->plt.offset;
4015 }
4016 }
4017 else
4018 {
4019 resolved_plt = htab->elf.iplt;
4020 plt_offset = h->plt.offset;
4021 }
4022
4023 relocation = (resolved_plt->output_section->vma
4024 + resolved_plt->output_offset + plt_offset);
cbe950e9
L
4025
4026 switch (r_type)
4027 {
4028 default:
4c544807
L
4029 if (h->root.root.string)
4030 name = h->root.root.string;
4031 else
4032 name = bfd_elf_sym_name (input_bfd, symtab_hdr, sym,
4033 NULL);
cbe950e9
L
4034 (*_bfd_error_handler)
4035 (_("%B: relocation %s against STT_GNU_IFUNC "
4036 "symbol `%s' isn't handled by %s"), input_bfd,
4037 x86_64_elf_howto_table[r_type].name,
4c544807 4038 name, __FUNCTION__);
cbe950e9
L
4039 bfd_set_error (bfd_error_bad_value);
4040 return FALSE;
4041
4042 case R_X86_64_32S:
0e1862bb 4043 if (bfd_link_pic (info))
cbe950e9 4044 abort ();
710ab287
L
4045 goto do_relocation;
4046
248775ba
L
4047 case R_X86_64_32:
4048 if (ABI_64_P (output_bfd))
4049 goto do_relocation;
17672001 4050 /* FALLTHROUGH */
eed180f8 4051 case R_X86_64_64:
710ab287
L
4052 if (rel->r_addend != 0)
4053 {
4c544807
L
4054 if (h->root.root.string)
4055 name = h->root.root.string;
4056 else
4057 name = bfd_elf_sym_name (input_bfd, symtab_hdr,
4058 sym, NULL);
710ab287
L
4059 (*_bfd_error_handler)
4060 (_("%B: relocation %s against STT_GNU_IFUNC "
4061 "symbol `%s' has non-zero addend: %d"),
4062 input_bfd, x86_64_elf_howto_table[r_type].name,
4c544807 4063 name, rel->r_addend);
710ab287
L
4064 bfd_set_error (bfd_error_bad_value);
4065 return FALSE;
4066 }
4067
4068 /* Generate dynamic relcoation only when there is a
c293fa49 4069 non-GOT reference in a shared object. */
0e1862bb 4070 if (bfd_link_pic (info) && h->non_got_ref)
710ab287
L
4071 {
4072 Elf_Internal_Rela outrel;
710ab287
L
4073 asection *sreloc;
4074
c25bc9fc
L
4075 /* Need a dynamic relocation to get the real function
4076 address. */
710ab287
L
4077 outrel.r_offset = _bfd_elf_section_offset (output_bfd,
4078 info,
4079 input_section,
4080 rel->r_offset);
4081 if (outrel.r_offset == (bfd_vma) -1
4082 || outrel.r_offset == (bfd_vma) -2)
4083 abort ();
4084
4085 outrel.r_offset += (input_section->output_section->vma
4086 + input_section->output_offset);
4087
4088 if (h->dynindx == -1
44c4ea11 4089 || h->forced_local
0e1862bb 4090 || bfd_link_executable (info))
710ab287
L
4091 {
4092 /* This symbol is resolved locally. */
56b8aada
L
4093 outrel.r_info = htab->r_info (0, R_X86_64_IRELATIVE);
4094 outrel.r_addend = (h->root.u.def.value
4095 + h->root.u.def.section->output_section->vma
4096 + h->root.u.def.section->output_offset);
710ab287
L
4097 }
4098 else
4099 {
351f65ca 4100 outrel.r_info = htab->r_info (h->dynindx, r_type);
710ab287
L
4101 outrel.r_addend = 0;
4102 }
4103
6de2ae4a 4104 sreloc = htab->elf.irelifunc;
351f65ca 4105 elf_append_rela (output_bfd, sreloc, &outrel);
710ab287
L
4106
4107 /* If this reloc is against an external symbol, we
4108 do not want to fiddle with the addend. Otherwise,
4109 we need to include the symbol value so that it
4110 becomes an addend for the dynamic reloc. For an
4111 internal symbol, we have updated addend. */
56b8aada 4112 continue;
710ab287 4113 }
17672001 4114 /* FALLTHROUGH */
cbe950e9 4115 case R_X86_64_PC32:
c3320543 4116 case R_X86_64_PC32_BND:
cbe950e9
L
4117 case R_X86_64_PC64:
4118 case R_X86_64_PLT32:
c3320543 4119 case R_X86_64_PLT32_BND:
cbe950e9
L
4120 goto do_relocation;
4121
4122 case R_X86_64_GOTPCREL:
56ceb5b5
L
4123 case R_X86_64_GOTPCRELX:
4124 case R_X86_64_REX_GOTPCRELX:
cbe950e9 4125 case R_X86_64_GOTPCREL64:
6de2ae4a 4126 base_got = htab->elf.sgot;
cbe950e9
L
4127 off = h->got.offset;
4128
7afd84dc 4129 if (base_got == NULL)
cbe950e9
L
4130 abort ();
4131
7afd84dc 4132 if (off == (bfd_vma) -1)
cbe950e9 4133 {
7afd84dc
L
4134 /* We can't use h->got.offset here to save state, or
4135 even just remember the offset, as finish_dynamic_symbol
4136 would use that as offset into .got. */
cbe950e9 4137
6de2ae4a 4138 if (htab->elf.splt != NULL)
7afd84dc 4139 {
eed180f8 4140 plt_index = h->plt.offset / plt_entry_size - 1;
7afd84dc 4141 off = (plt_index + 3) * GOT_ENTRY_SIZE;
6de2ae4a 4142 base_got = htab->elf.sgotplt;
7afd84dc 4143 }
cbe950e9
L
4144 else
4145 {
eed180f8 4146 plt_index = h->plt.offset / plt_entry_size;
7afd84dc 4147 off = plt_index * GOT_ENTRY_SIZE;
6de2ae4a 4148 base_got = htab->elf.igotplt;
7afd84dc
L
4149 }
4150
4151 if (h->dynindx == -1
4152 || h->forced_local
4153 || info->symbolic)
4154 {
eed180f8 4155 /* This references the local defitionion. We must
7afd84dc 4156 initialize this entry in the global offset table.
eed180f8 4157 Since the offset must always be a multiple of 8,
7afd84dc
L
4158 we use the least significant bit to record
4159 whether we have initialized it already.
4160
4161 When doing a dynamic link, we create a .rela.got
4162 relocation entry to initialize the value. This
4163 is done in the finish_dynamic_symbol routine. */
4164 if ((off & 1) != 0)
4165 off &= ~1;
4166 else
4167 {
4168 bfd_put_64 (output_bfd, relocation,
4169 base_got->contents + off);
4170 /* Note that this is harmless for the GOTPLT64
4171 case, as -1 | 1 still is -1. */
4172 h->got.offset |= 1;
4173 }
cbe950e9
L
4174 }
4175 }
4176
4177 relocation = (base_got->output_section->vma
4178 + base_got->output_offset + off);
4179
cbe950e9
L
4180 goto do_relocation;
4181 }
4182 }
4183
70256ad8
AJ
4184 /* When generating a shared object, the relocations handled here are
4185 copied into the output file to be resolved at run time. */
4186 switch (r_type)
4187 {
4188 case R_X86_64_GOT32:
7b81dfbb 4189 case R_X86_64_GOT64:
70256ad8
AJ
4190 /* Relocation is to the entry for this symbol in the global
4191 offset table. */
70256ad8 4192 case R_X86_64_GOTPCREL:
56ceb5b5
L
4193 case R_X86_64_GOTPCRELX:
4194 case R_X86_64_REX_GOTPCRELX:
7b81dfbb
AJ
4195 case R_X86_64_GOTPCREL64:
4196 /* Use global offset table entry as symbol value. */
4197 case R_X86_64_GOTPLT64:
553d1284 4198 /* This is obsolete and treated the the same as GOT64. */
6de2ae4a 4199 base_got = htab->elf.sgot;
7b81dfbb 4200
6de2ae4a 4201 if (htab->elf.sgot == NULL)
c434dee6 4202 abort ();
053579d7 4203
51e0a107 4204 if (h != NULL)
70256ad8 4205 {
b34976b6 4206 bfd_boolean dyn;
c434dee6
AJ
4207
4208 off = h->got.offset;
7b81dfbb 4209 if (h->needs_plt
eed180f8 4210 && h->plt.offset != (bfd_vma)-1
7b81dfbb
AJ
4211 && off == (bfd_vma)-1)
4212 {
4213 /* We can't use h->got.offset here to save
4214 state, or even just remember the offset, as
4215 finish_dynamic_symbol would use that as offset into
4216 .got. */
eed180f8 4217 bfd_vma plt_index = h->plt.offset / plt_entry_size - 1;
7b81dfbb 4218 off = (plt_index + 3) * GOT_ENTRY_SIZE;
6de2ae4a 4219 base_got = htab->elf.sgotplt;
7b81dfbb
AJ
4220 }
4221
c434dee6 4222 dyn = htab->elf.dynamic_sections_created;
51e0a107 4223
0e1862bb
L
4224 if (! WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn, bfd_link_pic (info), h)
4225 || (bfd_link_pic (info)
27482721 4226 && SYMBOL_REFERENCES_LOCAL (info, h))
4bc6e03a
AJ
4227 || (ELF_ST_VISIBILITY (h->other)
4228 && h->root.type == bfd_link_hash_undefweak))
51e0a107
JH
4229 {
4230 /* This is actually a static link, or it is a -Bsymbolic
4231 link and the symbol is defined locally, or the symbol
407443a3 4232 was forced to be local because of a version file. We
51e0a107
JH
4233 must initialize this entry in the global offset table.
4234 Since the offset must always be a multiple of 8, we
4235 use the least significant bit to record whether we
4236 have initialized it already.
4237
4238 When doing a dynamic link, we create a .rela.got
407443a3
AJ
4239 relocation entry to initialize the value. This is
4240 done in the finish_dynamic_symbol routine. */
51e0a107
JH
4241 if ((off & 1) != 0)
4242 off &= ~1;
4243 else
4244 {
4245 bfd_put_64 (output_bfd, relocation,
7b81dfbb
AJ
4246 base_got->contents + off);
4247 /* Note that this is harmless for the GOTPLT64 case,
eed180f8 4248 as -1 | 1 still is -1. */
51e0a107
JH
4249 h->got.offset |= 1;
4250 }
4251 }
053579d7 4252 else
b34976b6 4253 unresolved_reloc = FALSE;
70256ad8 4254 }
51e0a107
JH
4255 else
4256 {
c434dee6
AJ
4257 if (local_got_offsets == NULL)
4258 abort ();
51e0a107
JH
4259
4260 off = local_got_offsets[r_symndx];
4261
4262 /* The offset must always be a multiple of 8. We use
407443a3
AJ
4263 the least significant bit to record whether we have
4264 already generated the necessary reloc. */
51e0a107
JH
4265 if ((off & 1) != 0)
4266 off &= ~1;
4267 else
4268 {
c434dee6 4269 bfd_put_64 (output_bfd, relocation,
7b81dfbb 4270 base_got->contents + off);
51e0a107 4271
0e1862bb 4272 if (bfd_link_pic (info))
51e0a107 4273 {
947216bf 4274 asection *s;
51e0a107 4275 Elf_Internal_Rela outrel;
70256ad8 4276
51e0a107
JH
4277 /* We need to generate a R_X86_64_RELATIVE reloc
4278 for the dynamic linker. */
6de2ae4a 4279 s = htab->elf.srelgot;
947216bf 4280 if (s == NULL)
c434dee6 4281 abort ();
51e0a107 4282
7b81dfbb
AJ
4283 outrel.r_offset = (base_got->output_section->vma
4284 + base_got->output_offset
51e0a107 4285 + off);
351f65ca 4286 outrel.r_info = htab->r_info (0, R_X86_64_RELATIVE);
51e0a107 4287 outrel.r_addend = relocation;
351f65ca 4288 elf_append_rela (output_bfd, s, &outrel);
51e0a107
JH
4289 }
4290
4291 local_got_offsets[r_symndx] |= 1;
4292 }
51e0a107 4293 }
6a2bda3f 4294
c434dee6
AJ
4295 if (off >= (bfd_vma) -2)
4296 abort ();
4297
7b81dfbb
AJ
4298 relocation = base_got->output_section->vma
4299 + base_got->output_offset + off;
56ceb5b5
L
4300 if (r_type != R_X86_64_GOTPCREL
4301 && r_type != R_X86_64_GOTPCRELX
4302 && r_type != R_X86_64_REX_GOTPCRELX
4303 && r_type != R_X86_64_GOTPCREL64)
6de2ae4a
L
4304 relocation -= htab->elf.sgotplt->output_section->vma
4305 - htab->elf.sgotplt->output_offset;
c434dee6 4306
70256ad8
AJ
4307 break;
4308
d6ab8113
JB
4309 case R_X86_64_GOTOFF64:
4310 /* Relocation is relative to the start of the global offset
4311 table. */
4312
3d949995
L
4313 /* Check to make sure it isn't a protected function or data
4314 symbol for shared library since it may not be local when
e3c0e327
L
4315 used as function address or with copy relocation. We also
4316 need to make sure that a symbol is referenced locally. */
0e1862bb 4317 if (bfd_link_pic (info) && h)
d6ab8113 4318 {
e3c0e327
L
4319 if (!h->def_regular)
4320 {
4321 const char *v;
4322
4323 switch (ELF_ST_VISIBILITY (h->other))
4324 {
4325 case STV_HIDDEN:
4326 v = _("hidden symbol");
4327 break;
4328 case STV_INTERNAL:
4329 v = _("internal symbol");
4330 break;
4331 case STV_PROTECTED:
4332 v = _("protected symbol");
4333 break;
4334 default:
4335 v = _("symbol");
4336 break;
4337 }
4338
4339 (*_bfd_error_handler)
4340 (_("%B: relocation R_X86_64_GOTOFF64 against undefined %s `%s' can not be used when making a shared object"),
4341 input_bfd, v, h->root.root.string);
4342 bfd_set_error (bfd_error_bad_value);
4343 return FALSE;
4344 }
0e1862bb 4345 else if (!bfd_link_executable (info)
e3c0e327
L
4346 && !SYMBOL_REFERENCES_LOCAL (info, h)
4347 && (h->type == STT_FUNC
4348 || h->type == STT_OBJECT)
4349 && ELF_ST_VISIBILITY (h->other) == STV_PROTECTED)
4350 {
4351 (*_bfd_error_handler)
4352 (_("%B: relocation R_X86_64_GOTOFF64 against protected %s `%s' can not be used when making a shared object"),
4353 input_bfd,
4354 h->type == STT_FUNC ? "function" : "data",
4355 h->root.root.string);
4356 bfd_set_error (bfd_error_bad_value);
d6ab8113 4357 return FALSE;
e3c0e327 4358 }
d6ab8113
JB
4359 }
4360
4361 /* Note that sgot is not involved in this
4362 calculation. We always want the start of .got.plt. If we
4363 defined _GLOBAL_OFFSET_TABLE_ in a different way, as is
4364 permitted by the ABI, we might have to change this
4365 calculation. */
6de2ae4a
L
4366 relocation -= htab->elf.sgotplt->output_section->vma
4367 + htab->elf.sgotplt->output_offset;
d6ab8113
JB
4368 break;
4369
4370 case R_X86_64_GOTPC32:
7b81dfbb 4371 case R_X86_64_GOTPC64:
d6ab8113 4372 /* Use global offset table as symbol value. */
6de2ae4a
L
4373 relocation = htab->elf.sgotplt->output_section->vma
4374 + htab->elf.sgotplt->output_offset;
d6ab8113
JB
4375 unresolved_reloc = FALSE;
4376 break;
7b81dfbb
AJ
4377
4378 case R_X86_64_PLTOFF64:
4379 /* Relocation is PLT entry relative to GOT. For local
4380 symbols it's the symbol itself relative to GOT. */
eed180f8 4381 if (h != NULL
7b81dfbb
AJ
4382 /* See PLT32 handling. */
4383 && h->plt.offset != (bfd_vma) -1
6de2ae4a 4384 && htab->elf.splt != NULL)
7b81dfbb 4385 {
0ff2b86e
L
4386 if (htab->plt_bnd != NULL)
4387 {
4388 resolved_plt = htab->plt_bnd;
4389 plt_offset = eh->plt_bnd.offset;
4390 }
4391 else
4392 {
4393 resolved_plt = htab->elf.splt;
4394 plt_offset = h->plt.offset;
4395 }
4396
4397 relocation = (resolved_plt->output_section->vma
4398 + resolved_plt->output_offset
4399 + plt_offset);
7b81dfbb
AJ
4400 unresolved_reloc = FALSE;
4401 }
4402
6de2ae4a
L
4403 relocation -= htab->elf.sgotplt->output_section->vma
4404 + htab->elf.sgotplt->output_offset;
7b81dfbb 4405 break;
d6ab8113 4406
70256ad8 4407 case R_X86_64_PLT32:
c3320543 4408 case R_X86_64_PLT32_BND:
70256ad8
AJ
4409 /* Relocation is to the entry for this symbol in the
4410 procedure linkage table. */
4411
4412 /* Resolve a PLT32 reloc against a local symbol directly,
407443a3 4413 without using the procedure linkage table. */
70256ad8
AJ
4414 if (h == NULL)
4415 break;
4416
dd7e64d4
L
4417 if ((h->plt.offset == (bfd_vma) -1
4418 && eh->plt_got.offset == (bfd_vma) -1)
6de2ae4a 4419 || htab->elf.splt == NULL)
70256ad8
AJ
4420 {
4421 /* We didn't make a PLT entry for this symbol. This
407443a3
AJ
4422 happens when statically linking PIC code, or when
4423 using -Bsymbolic. */
70256ad8
AJ
4424 break;
4425 }
4426
dd7e64d4 4427 if (h->plt.offset != (bfd_vma) -1)
0ff2b86e 4428 {
dd7e64d4
L
4429 if (htab->plt_bnd != NULL)
4430 {
4431 resolved_plt = htab->plt_bnd;
4432 plt_offset = eh->plt_bnd.offset;
4433 }
4434 else
4435 {
4436 resolved_plt = htab->elf.splt;
4437 plt_offset = h->plt.offset;
4438 }
0ff2b86e
L
4439 }
4440 else
4441 {
dd7e64d4
L
4442 /* Use the GOT PLT. */
4443 resolved_plt = htab->plt_got;
4444 plt_offset = eh->plt_got.offset;
0ff2b86e
L
4445 }
4446
4447 relocation = (resolved_plt->output_section->vma
4448 + resolved_plt->output_offset
4449 + plt_offset);
b34976b6 4450 unresolved_reloc = FALSE;
70256ad8
AJ
4451 break;
4452
1788fc08
L
4453 case R_X86_64_SIZE32:
4454 case R_X86_64_SIZE64:
1788fc08
L
4455 /* Set to symbol size. */
4456 relocation = st_size;
4457 goto direct;
4458
fd8ab9e5
AJ
4459 case R_X86_64_PC8:
4460 case R_X86_64_PC16:
4461 case R_X86_64_PC32:
c3320543 4462 case R_X86_64_PC32_BND:
6333bc0d
L
4463 /* Don't complain about -fPIC if the symbol is undefined when
4464 building executable. */
0e1862bb 4465 if (bfd_link_pic (info)
ba3bee0b 4466 && (input_section->flags & SEC_ALLOC) != 0
90f487df 4467 && (input_section->flags & SEC_READONLY) != 0
6333bc0d 4468 && h != NULL
0e1862bb 4469 && !(bfd_link_executable (info)
6333bc0d 4470 && h->root.type == bfd_link_hash_undefined))
6610a52d 4471 {
41bed6dd
L
4472 bfd_boolean fail = FALSE;
4473 bfd_boolean branch
c3320543
L
4474 = ((r_type == R_X86_64_PC32
4475 || r_type == R_X86_64_PC32_BND)
41bed6dd
L
4476 && is_32bit_relative_branch (contents, rel->r_offset));
4477
4478 if (SYMBOL_REFERENCES_LOCAL (info, h))
4479 {
4480 /* Symbol is referenced locally. Make sure it is
4481 defined locally or for a branch. */
4482 fail = !h->def_regular && !branch;
4483 }
0e1862bb 4484 else if (!(bfd_link_executable (info)
bc696fd5 4485 && (h->needs_copy || eh->needs_copy)))
41bed6dd 4486 {
9a926d55
L
4487 /* Symbol doesn't need copy reloc and isn't referenced
4488 locally. We only allow branch to symbol with
4489 non-default visibility. */
41bed6dd
L
4490 fail = (!branch
4491 || ELF_ST_VISIBILITY (h->other) == STV_DEFAULT);
4492 }
4493
4494 if (fail)
4495 {
4496 const char *fmt;
4497 const char *v;
4498 const char *pic = "";
4499
4500 switch (ELF_ST_VISIBILITY (h->other))
4501 {
4502 case STV_HIDDEN:
4503 v = _("hidden symbol");
4504 break;
4505 case STV_INTERNAL:
4506 v = _("internal symbol");
4507 break;
4508 case STV_PROTECTED:
4509 v = _("protected symbol");
4510 break;
4511 default:
4512 v = _("symbol");
4513 pic = _("; recompile with -fPIC");
4514 break;
4515 }
4516
4517 if (h->def_regular)
4518 fmt = _("%B: relocation %s against %s `%s' can not be used when making a shared object%s");
4519 else
4520 fmt = _("%B: relocation %s against undefined %s `%s' can not be used when making a shared object%s");
4521
4522 (*_bfd_error_handler) (fmt, input_bfd,
4523 x86_64_elf_howto_table[r_type].name,
4524 v, h->root.root.string, pic);
4525 bfd_set_error (bfd_error_bad_value);
4526 return FALSE;
4527 }
6610a52d
L
4528 }
4529 /* Fall through. */
4530
70256ad8
AJ
4531 case R_X86_64_8:
4532 case R_X86_64_16:
4533 case R_X86_64_32:
d6ab8113 4534 case R_X86_64_PC64:
6b3db546 4535 case R_X86_64_64:
80643fbc 4536 /* FIXME: The ABI says the linker should make sure the value is
407443a3 4537 the same when it's zeroextended to 64 bit. */
c434dee6 4538
1788fc08 4539direct:
b1e24c02 4540 if ((input_section->flags & SEC_ALLOC) == 0)
c434dee6
AJ
4541 break;
4542
9a926d55 4543 /* Don't copy a pc-relative relocation into the output file
6333bc0d 4544 if the symbol needs copy reloc or the symbol is undefined
04ebc307
L
4545 when building executable. Copy dynamic function pointer
4546 relocations. */
0e1862bb
L
4547 if ((bfd_link_pic (info)
4548 && !(bfd_link_executable (info)
fd9edc90 4549 && h != NULL
6333bc0d
L
4550 && (h->needs_copy
4551 || eh->needs_copy
4552 || h->root.type == bfd_link_hash_undefined)
9a926d55 4553 && IS_X86_64_PCREL_TYPE (r_type))
4bc6e03a
AJ
4554 && (h == NULL
4555 || ELF_ST_VISIBILITY (h->other) == STV_DEFAULT
4556 || h->root.type != bfd_link_hash_undefweak)
1788fc08
L
4557 && ((! IS_X86_64_PCREL_TYPE (r_type)
4558 && r_type != R_X86_64_SIZE32
4559 && r_type != R_X86_64_SIZE64)
d8045f23 4560 || ! SYMBOL_CALLS_LOCAL (info, h)))
d40d037c 4561 || (ELIMINATE_COPY_RELOCS
0e1862bb 4562 && !bfd_link_pic (info)
c434dee6
AJ
4563 && h != NULL
4564 && h->dynindx != -1
04ebc307 4565 && (!h->non_got_ref || eh->func_pointer_refcount > 0)
f5385ebf
AM
4566 && ((h->def_dynamic
4567 && !h->def_regular)
c434dee6 4568 || h->root.type == bfd_link_hash_undefweak
0f88be7a 4569 || h->root.type == bfd_link_hash_undefined)))
70256ad8
AJ
4570 {
4571 Elf_Internal_Rela outrel;
b34976b6 4572 bfd_boolean skip, relocate;
c434dee6 4573 asection *sreloc;
70256ad8
AJ
4574
4575 /* When generating a shared object, these relocations
4576 are copied into the output file to be resolved at run
407443a3 4577 time. */
b34976b6
AM
4578 skip = FALSE;
4579 relocate = FALSE;
70256ad8 4580
c629eae0
JJ
4581 outrel.r_offset =
4582 _bfd_elf_section_offset (output_bfd, info, input_section,
c434dee6 4583 rel->r_offset);
c629eae0 4584 if (outrel.r_offset == (bfd_vma) -1)
b34976b6 4585 skip = TRUE;
0fb19cbc 4586 else if (outrel.r_offset == (bfd_vma) -2)
b34976b6 4587 skip = TRUE, relocate = TRUE;
70256ad8
AJ
4588
4589 outrel.r_offset += (input_section->output_section->vma
4590 + input_section->output_offset);
4591
4592 if (skip)
0bb2d96a 4593 memset (&outrel, 0, sizeof outrel);
c434dee6 4594
fd8ab9e5
AJ
4595 /* h->dynindx may be -1 if this symbol was marked to
4596 become local. */
4597 else if (h != NULL
c434dee6 4598 && h->dynindx != -1
d8045f23 4599 && (IS_X86_64_PCREL_TYPE (r_type)
0e1862bb 4600 || ! bfd_link_pic (info)
d8045f23
NC
4601 || ! SYMBOLIC_BIND (info, h)
4602 || ! h->def_regular))
70256ad8 4603 {
351f65ca 4604 outrel.r_info = htab->r_info (h->dynindx, r_type);
c434dee6 4605 outrel.r_addend = rel->r_addend;
70256ad8
AJ
4606 }
4607 else
4608 {
c434dee6 4609 /* This symbol is local, or marked to become local. */
248775ba 4610 if (r_type == htab->pointer_r_type)
607c0e09 4611 {
b34976b6 4612 relocate = TRUE;
351f65ca 4613 outrel.r_info = htab->r_info (0, R_X86_64_RELATIVE);
607c0e09
AS
4614 outrel.r_addend = relocation + rel->r_addend;
4615 }
64d25c44
L
4616 else if (r_type == R_X86_64_64
4617 && !ABI_64_P (output_bfd))
4618 {
4619 relocate = TRUE;
4620 outrel.r_info = htab->r_info (0,
4621 R_X86_64_RELATIVE64);
4622 outrel.r_addend = relocation + rel->r_addend;
8cf0d2dd
L
4623 /* Check addend overflow. */
4624 if ((outrel.r_addend & 0x80000000)
4625 != (rel->r_addend & 0x80000000))
4626 {
4627 const char *name;
268a8d3a 4628 int addend = rel->r_addend;
8cf0d2dd
L
4629 if (h && h->root.root.string)
4630 name = h->root.root.string;
4631 else
4632 name = bfd_elf_sym_name (input_bfd, symtab_hdr,
4633 sym, NULL);
6f2c9068
L
4634 if (addend < 0)
4635 (*_bfd_error_handler)
268a8d3a 4636 (_("%B: addend -0x%x in relocation %s against "
6f2c9068
L
4637 "symbol `%s' at 0x%lx in section `%A' is "
4638 "out of range"),
4639 input_bfd, input_section, addend,
4640 x86_64_elf_howto_table[r_type].name,
4641 name, (unsigned long) rel->r_offset);
4642 else
4643 (*_bfd_error_handler)
268a8d3a 4644 (_("%B: addend 0x%x in relocation %s against "
6f2c9068
L
4645 "symbol `%s' at 0x%lx in section `%A' is "
4646 "out of range"),
4647 input_bfd, input_section, addend,
4648 x86_64_elf_howto_table[r_type].name,
4649 name, (unsigned long) rel->r_offset);
8cf0d2dd
L
4650 bfd_set_error (bfd_error_bad_value);
4651 return FALSE;
4652 }
64d25c44 4653 }
607c0e09
AS
4654 else
4655 {
4656 long sindx;
4657
8517fae7 4658 if (bfd_is_abs_section (sec))
607c0e09
AS
4659 sindx = 0;
4660 else if (sec == NULL || sec->owner == NULL)
4661 {
4662 bfd_set_error (bfd_error_bad_value);
b34976b6 4663 return FALSE;
607c0e09
AS
4664 }
4665 else
4666 {
4667 asection *osec;
4668
74541ad4
AM
4669 /* We are turning this relocation into one
4670 against a section symbol. It would be
4671 proper to subtract the symbol's value,
4672 osec->vma, from the emitted reloc addend,
4673 but ld.so expects buggy relocs. */
607c0e09
AS
4674 osec = sec->output_section;
4675 sindx = elf_section_data (osec)->dynindx;
74541ad4
AM
4676 if (sindx == 0)
4677 {
4678 asection *oi = htab->elf.text_index_section;
4679 sindx = elf_section_data (oi)->dynindx;
4680 }
4681 BFD_ASSERT (sindx != 0);
607c0e09
AS
4682 }
4683
351f65ca 4684 outrel.r_info = htab->r_info (sindx, r_type);
607c0e09
AS
4685 outrel.r_addend = relocation + rel->r_addend;
4686 }
70256ad8
AJ
4687 }
4688
cbe950e9 4689 sreloc = elf_section_data (input_section)->sreloc;
d8045f23 4690
62d78908
L
4691 if (sreloc == NULL || sreloc->contents == NULL)
4692 {
4693 r = bfd_reloc_notsupported;
4694 goto check_relocation_error;
4695 }
c434dee6 4696
351f65ca 4697 elf_append_rela (output_bfd, sreloc, &outrel);
70256ad8
AJ
4698
4699 /* If this reloc is against an external symbol, we do
4700 not want to fiddle with the addend. Otherwise, we
4701 need to include the symbol value so that it becomes
4702 an addend for the dynamic reloc. */
0f88be7a 4703 if (! relocate)
70256ad8
AJ
4704 continue;
4705 }
4706
4707 break;
4708
bffbf940 4709 case R_X86_64_TLSGD:
67a4f2b7
AO
4710 case R_X86_64_GOTPC32_TLSDESC:
4711 case R_X86_64_TLSDESC_CALL:
bffbf940 4712 case R_X86_64_GOTTPOFF:
bffbf940
JJ
4713 tls_type = GOT_UNKNOWN;
4714 if (h == NULL && local_got_offsets)
351f65ca 4715 tls_type = elf_x86_64_local_got_tls_type (input_bfd) [r_symndx];
bffbf940 4716 else if (h != NULL)
351f65ca 4717 tls_type = elf_x86_64_hash_entry (h)->tls_type;
142411ca 4718
351f65ca
L
4719 if (! elf_x86_64_tls_transition (info, input_bfd,
4720 input_section, contents,
4721 symtab_hdr, sym_hashes,
4722 &r_type, tls_type, rel,
4723 relend, h, r_symndx))
534a31f6 4724 return FALSE;
bffbf940
JJ
4725
4726 if (r_type == R_X86_64_TPOFF32)
4727 {
142411ca
L
4728 bfd_vma roff = rel->r_offset;
4729
bffbf940 4730 BFD_ASSERT (! unresolved_reloc);
142411ca 4731
351f65ca 4732 if (ELF32_R_TYPE (rel->r_info) == R_X86_64_TLSGD)
bffbf940 4733 {
52bc799a 4734 /* GD->LE transition. For 64bit, change
abcf1d52 4735 .byte 0x66; leaq foo@tlsgd(%rip), %rdi
a3fadc9a 4736 .word 0x6666; rex64; call __tls_get_addr
52bc799a 4737 into:
bffbf940 4738 movq %fs:0, %rax
52bc799a
L
4739 leaq foo@tpoff(%rax), %rax
4740 For 32bit, change
4741 leaq foo@tlsgd(%rip), %rdi
4742 .word 0x6666; rex64; call __tls_get_addr
4743 into:
4744 movl %fs:0, %eax
5c98a14e
JJ
4745 leaq foo@tpoff(%rax), %rax
4746 For largepic, change:
4747 leaq foo@tlsgd(%rip), %rdi
4748 movabsq $__tls_get_addr@pltoff, %rax
4749 addq %rbx, %rax
4750 call *%rax
4751 into:
4752 movq %fs:0, %rax
4753 leaq foo@tpoff(%rax), %rax
4754 nopw 0x0(%rax,%rax,1) */
4755 int largepic = 0;
4756 if (ABI_64_P (output_bfd)
4757 && contents[roff + 5] == (bfd_byte) '\xb8')
4758 {
4759 memcpy (contents + roff - 3,
4760 "\x64\x48\x8b\x04\x25\0\0\0\0\x48\x8d\x80"
4761 "\0\0\0\0\x66\x0f\x1f\x44\0", 22);
4762 largepic = 1;
4763 }
4764 else if (ABI_64_P (output_bfd))
52bc799a
L
4765 memcpy (contents + roff - 4,
4766 "\x64\x48\x8b\x04\x25\0\0\0\0\x48\x8d\x80\0\0\0",
4767 16);
4768 else
4769 memcpy (contents + roff - 3,
4770 "\x64\x8b\x04\x25\0\0\0\0\x48\x8d\x80\0\0\0",
4771 15);
eb4ff4d6 4772 bfd_put_32 (output_bfd,
351f65ca 4773 elf_x86_64_tpoff (info, relocation),
5c98a14e
JJ
4774 contents + roff + 8 + largepic);
4775 /* Skip R_X86_64_PC32/R_X86_64_PLT32/R_X86_64_PLTOFF64. */
bffbf940
JJ
4776 rel++;
4777 continue;
4778 }
351f65ca 4779 else if (ELF32_R_TYPE (rel->r_info) == R_X86_64_GOTPC32_TLSDESC)
67a4f2b7
AO
4780 {
4781 /* GDesc -> LE transition.
4782 It's originally something like:
4783 leaq x@tlsdesc(%rip), %rax
4784
4785 Change it to:
c9736ba0 4786 movl $x@tpoff, %rax. */
67a4f2b7 4787
c9736ba0 4788 unsigned int val, type;
67a4f2b7 4789
67a4f2b7 4790 type = bfd_get_8 (input_bfd, contents + roff - 3);
67a4f2b7 4791 val = bfd_get_8 (input_bfd, contents + roff - 1);
67a4f2b7
AO
4792 bfd_put_8 (output_bfd, 0x48 | ((type >> 2) & 1),
4793 contents + roff - 3);
4794 bfd_put_8 (output_bfd, 0xc7, contents + roff - 2);
4795 bfd_put_8 (output_bfd, 0xc0 | ((val >> 3) & 7),
4796 contents + roff - 1);
eb4ff4d6 4797 bfd_put_32 (output_bfd,
351f65ca 4798 elf_x86_64_tpoff (info, relocation),
67a4f2b7
AO
4799 contents + roff);
4800 continue;
4801 }
351f65ca 4802 else if (ELF32_R_TYPE (rel->r_info) == R_X86_64_TLSDESC_CALL)
67a4f2b7
AO
4803 {
4804 /* GDesc -> LE transition.
4805 It's originally:
4806 call *(%rax)
4807 Turn it into:
142411ca 4808 xchg %ax,%ax. */
10efb593 4809 bfd_put_8 (output_bfd, 0x66, contents + roff);
67a4f2b7
AO
4810 bfd_put_8 (output_bfd, 0x90, contents + roff + 1);
4811 continue;
4812 }
351f65ca 4813 else if (ELF32_R_TYPE (rel->r_info) == R_X86_64_GOTTPOFF)
bffbf940 4814 {
bffbf940 4815 /* IE->LE transition:
cf61b747 4816 For 64bit, originally it can be one of:
bffbf940
JJ
4817 movq foo@gottpoff(%rip), %reg
4818 addq foo@gottpoff(%rip), %reg
4819 We change it into:
4820 movq $foo, %reg
4821 leaq foo(%reg), %reg
cf61b747
L
4822 addq $foo, %reg.
4823 For 32bit, originally it can be one of:
4824 movq foo@gottpoff(%rip), %reg
4825 addl foo@gottpoff(%rip), %reg
4826 We change it into:
4827 movq $foo, %reg
4828 leal foo(%reg), %reg
4829 addl $foo, %reg. */
142411ca
L
4830
4831 unsigned int val, type, reg;
4832
cf61b747
L
4833 if (roff >= 3)
4834 val = bfd_get_8 (input_bfd, contents + roff - 3);
4835 else
4836 val = 0;
142411ca
L
4837 type = bfd_get_8 (input_bfd, contents + roff - 2);
4838 reg = bfd_get_8 (input_bfd, contents + roff - 1);
bffbf940 4839 reg >>= 3;
bffbf940
JJ
4840 if (type == 0x8b)
4841 {
4842 /* movq */
4843 if (val == 0x4c)
4844 bfd_put_8 (output_bfd, 0x49,
142411ca 4845 contents + roff - 3);
4a4c5f25
L
4846 else if (!ABI_64_P (output_bfd) && val == 0x44)
4847 bfd_put_8 (output_bfd, 0x41,
4848 contents + roff - 3);
bffbf940 4849 bfd_put_8 (output_bfd, 0xc7,
142411ca 4850 contents + roff - 2);
bffbf940 4851 bfd_put_8 (output_bfd, 0xc0 | reg,
142411ca 4852 contents + roff - 1);
bffbf940
JJ
4853 }
4854 else if (reg == 4)
4855 {
cf61b747
L
4856 /* addq/addl -> addq/addl - addressing with %rsp/%r12
4857 is special */
bffbf940
JJ
4858 if (val == 0x4c)
4859 bfd_put_8 (output_bfd, 0x49,
142411ca 4860 contents + roff - 3);
4a4c5f25
L
4861 else if (!ABI_64_P (output_bfd) && val == 0x44)
4862 bfd_put_8 (output_bfd, 0x41,
4863 contents + roff - 3);
bffbf940 4864 bfd_put_8 (output_bfd, 0x81,
142411ca 4865 contents + roff - 2);
bffbf940 4866 bfd_put_8 (output_bfd, 0xc0 | reg,
142411ca 4867 contents + roff - 1);
bffbf940
JJ
4868 }
4869 else
4870 {
cf61b747 4871 /* addq/addl -> leaq/leal */
bffbf940
JJ
4872 if (val == 0x4c)
4873 bfd_put_8 (output_bfd, 0x4d,
142411ca 4874 contents + roff - 3);
4a4c5f25
L
4875 else if (!ABI_64_P (output_bfd) && val == 0x44)
4876 bfd_put_8 (output_bfd, 0x45,
4877 contents + roff - 3);
bffbf940 4878 bfd_put_8 (output_bfd, 0x8d,
142411ca 4879 contents + roff - 2);
bffbf940 4880 bfd_put_8 (output_bfd, 0x80 | reg | (reg << 3),
142411ca 4881 contents + roff - 1);
bffbf940 4882 }
eb4ff4d6 4883 bfd_put_32 (output_bfd,
351f65ca 4884 elf_x86_64_tpoff (info, relocation),
142411ca 4885 contents + roff);
bffbf940
JJ
4886 continue;
4887 }
142411ca
L
4888 else
4889 BFD_ASSERT (FALSE);
bffbf940
JJ
4890 }
4891
6de2ae4a 4892 if (htab->elf.sgot == NULL)
bffbf940
JJ
4893 abort ();
4894
4895 if (h != NULL)
67a4f2b7
AO
4896 {
4897 off = h->got.offset;
351f65ca 4898 offplt = elf_x86_64_hash_entry (h)->tlsdesc_got;
67a4f2b7 4899 }
bffbf940
JJ
4900 else
4901 {
4902 if (local_got_offsets == NULL)
4903 abort ();
4904
4905 off = local_got_offsets[r_symndx];
67a4f2b7 4906 offplt = local_tlsdesc_gotents[r_symndx];
bffbf940
JJ
4907 }
4908
4909 if ((off & 1) != 0)
4910 off &= ~1;
26e41594 4911 else
bffbf940
JJ
4912 {
4913 Elf_Internal_Rela outrel;
bffbf940 4914 int dr_type, indx;
67a4f2b7 4915 asection *sreloc;
bffbf940 4916
6de2ae4a 4917 if (htab->elf.srelgot == NULL)
bffbf940
JJ
4918 abort ();
4919
67a4f2b7
AO
4920 indx = h && h->dynindx != -1 ? h->dynindx : 0;
4921
4922 if (GOT_TLS_GDESC_P (tls_type))
4923 {
351f65ca 4924 outrel.r_info = htab->r_info (indx, R_X86_64_TLSDESC);
67a4f2b7 4925 BFD_ASSERT (htab->sgotplt_jump_table_size + offplt
6de2ae4a
L
4926 + 2 * GOT_ENTRY_SIZE <= htab->elf.sgotplt->size);
4927 outrel.r_offset = (htab->elf.sgotplt->output_section->vma
4928 + htab->elf.sgotplt->output_offset
67a4f2b7
AO
4929 + offplt
4930 + htab->sgotplt_jump_table_size);
6de2ae4a 4931 sreloc = htab->elf.srelplt;
67a4f2b7 4932 if (indx == 0)
351f65ca 4933 outrel.r_addend = relocation - elf_x86_64_dtpoff_base (info);
67a4f2b7
AO
4934 else
4935 outrel.r_addend = 0;
351f65ca 4936 elf_append_rela (output_bfd, sreloc, &outrel);
67a4f2b7
AO
4937 }
4938
6de2ae4a 4939 sreloc = htab->elf.srelgot;
67a4f2b7 4940
6de2ae4a
L
4941 outrel.r_offset = (htab->elf.sgot->output_section->vma
4942 + htab->elf.sgot->output_offset + off);
bffbf940 4943
67a4f2b7 4944 if (GOT_TLS_GD_P (tls_type))
bffbf940 4945 dr_type = R_X86_64_DTPMOD64;
67a4f2b7
AO
4946 else if (GOT_TLS_GDESC_P (tls_type))
4947 goto dr_done;
bffbf940
JJ
4948 else
4949 dr_type = R_X86_64_TPOFF64;
4950
6de2ae4a 4951 bfd_put_64 (output_bfd, 0, htab->elf.sgot->contents + off);
bffbf940 4952 outrel.r_addend = 0;
67a4f2b7
AO
4953 if ((dr_type == R_X86_64_TPOFF64
4954 || dr_type == R_X86_64_TLSDESC) && indx == 0)
351f65ca
L
4955 outrel.r_addend = relocation - elf_x86_64_dtpoff_base (info);
4956 outrel.r_info = htab->r_info (indx, dr_type);
bffbf940 4957
351f65ca 4958 elf_append_rela (output_bfd, sreloc, &outrel);
bffbf940 4959
67a4f2b7 4960 if (GOT_TLS_GD_P (tls_type))
bffbf940
JJ
4961 {
4962 if (indx == 0)
4963 {
d40d037c 4964 BFD_ASSERT (! unresolved_reloc);
bffbf940 4965 bfd_put_64 (output_bfd,
351f65ca 4966 relocation - elf_x86_64_dtpoff_base (info),
6de2ae4a 4967 htab->elf.sgot->contents + off + GOT_ENTRY_SIZE);
bffbf940
JJ
4968 }
4969 else
4970 {
4971 bfd_put_64 (output_bfd, 0,
6de2ae4a 4972 htab->elf.sgot->contents + off + GOT_ENTRY_SIZE);
351f65ca 4973 outrel.r_info = htab->r_info (indx,
bffbf940
JJ
4974 R_X86_64_DTPOFF64);
4975 outrel.r_offset += GOT_ENTRY_SIZE;
351f65ca 4976 elf_append_rela (output_bfd, sreloc,
464d3bd4 4977 &outrel);
bffbf940
JJ
4978 }
4979 }
4980
67a4f2b7 4981 dr_done:
bffbf940
JJ
4982 if (h != NULL)
4983 h->got.offset |= 1;
4984 else
4985 local_got_offsets[r_symndx] |= 1;
4986 }
4987
67a4f2b7
AO
4988 if (off >= (bfd_vma) -2
4989 && ! GOT_TLS_GDESC_P (tls_type))
bffbf940 4990 abort ();
351f65ca 4991 if (r_type == ELF32_R_TYPE (rel->r_info))
bffbf940 4992 {
67a4f2b7
AO
4993 if (r_type == R_X86_64_GOTPC32_TLSDESC
4994 || r_type == R_X86_64_TLSDESC_CALL)
6de2ae4a
L
4995 relocation = htab->elf.sgotplt->output_section->vma
4996 + htab->elf.sgotplt->output_offset
67a4f2b7
AO
4997 + offplt + htab->sgotplt_jump_table_size;
4998 else
6de2ae4a
L
4999 relocation = htab->elf.sgot->output_section->vma
5000 + htab->elf.sgot->output_offset + off;
b34976b6 5001 unresolved_reloc = FALSE;
bffbf940 5002 }
142411ca 5003 else
67a4f2b7 5004 {
142411ca 5005 bfd_vma roff = rel->r_offset;
67a4f2b7 5006
351f65ca 5007 if (ELF32_R_TYPE (rel->r_info) == R_X86_64_TLSGD)
142411ca 5008 {
52bc799a 5009 /* GD->IE transition. For 64bit, change
142411ca
L
5010 .byte 0x66; leaq foo@tlsgd(%rip), %rdi
5011 .word 0x6666; rex64; call __tls_get_addr@plt
52bc799a 5012 into:
142411ca 5013 movq %fs:0, %rax
52bc799a
L
5014 addq foo@gottpoff(%rip), %rax
5015 For 32bit, change
5016 leaq foo@tlsgd(%rip), %rdi
5017 .word 0x6666; rex64; call __tls_get_addr@plt
5018 into:
5019 movl %fs:0, %eax
5c98a14e
JJ
5020 addq foo@gottpoff(%rip), %rax
5021 For largepic, change:
5022 leaq foo@tlsgd(%rip), %rdi
5023 movabsq $__tls_get_addr@pltoff, %rax
5024 addq %rbx, %rax
5025 call *%rax
5026 into:
5027 movq %fs:0, %rax
5028 addq foo@gottpoff(%rax), %rax
5029 nopw 0x0(%rax,%rax,1) */
5030 int largepic = 0;
5031 if (ABI_64_P (output_bfd)
5032 && contents[roff + 5] == (bfd_byte) '\xb8')
5033 {
5034 memcpy (contents + roff - 3,
5035 "\x64\x48\x8b\x04\x25\0\0\0\0\x48\x03\x05"
5036 "\0\0\0\0\x66\x0f\x1f\x44\0", 22);
5037 largepic = 1;
5038 }
5039 else if (ABI_64_P (output_bfd))
52bc799a
L
5040 memcpy (contents + roff - 4,
5041 "\x64\x48\x8b\x04\x25\0\0\0\0\x48\x03\x05\0\0\0",
5042 16);
5043 else
5044 memcpy (contents + roff - 3,
5045 "\x64\x8b\x04\x25\0\0\0\0\x48\x03\x05\0\0\0",
5046 15);
142411ca 5047
6de2ae4a
L
5048 relocation = (htab->elf.sgot->output_section->vma
5049 + htab->elf.sgot->output_offset + off
142411ca 5050 - roff
5c98a14e 5051 - largepic
142411ca
L
5052 - input_section->output_section->vma
5053 - input_section->output_offset
5054 - 12);
5055 bfd_put_32 (output_bfd, relocation,
5c98a14e
JJ
5056 contents + roff + 8 + largepic);
5057 /* Skip R_X86_64_PLT32/R_X86_64_PLTOFF64. */
142411ca
L
5058 rel++;
5059 continue;
5060 }
351f65ca 5061 else if (ELF32_R_TYPE (rel->r_info) == R_X86_64_GOTPC32_TLSDESC)
142411ca
L
5062 {
5063 /* GDesc -> IE transition.
5064 It's originally something like:
5065 leaq x@tlsdesc(%rip), %rax
67a4f2b7 5066
142411ca 5067 Change it to:
c9736ba0 5068 movq x@gottpoff(%rip), %rax # before xchg %ax,%ax. */
67a4f2b7 5069
142411ca
L
5070 /* Now modify the instruction as appropriate. To
5071 turn a leaq into a movq in the form we use it, it
5072 suffices to change the second byte from 0x8d to
5073 0x8b. */
5074 bfd_put_8 (output_bfd, 0x8b, contents + roff - 2);
5075
5076 bfd_put_32 (output_bfd,
6de2ae4a
L
5077 htab->elf.sgot->output_section->vma
5078 + htab->elf.sgot->output_offset + off
142411ca
L
5079 - rel->r_offset
5080 - input_section->output_section->vma
5081 - input_section->output_offset
5082 - 4,
5083 contents + roff);
5084 continue;
5085 }
351f65ca 5086 else if (ELF32_R_TYPE (rel->r_info) == R_X86_64_TLSDESC_CALL)
142411ca
L
5087 {
5088 /* GDesc -> IE transition.
5089 It's originally:
5090 call *(%rax)
5091
5092 Change it to:
c9736ba0 5093 xchg %ax, %ax. */
142411ca 5094
142411ca
L
5095 bfd_put_8 (output_bfd, 0x66, contents + roff);
5096 bfd_put_8 (output_bfd, 0x90, contents + roff + 1);
5097 continue;
5098 }
5099 else
5100 BFD_ASSERT (FALSE);
67a4f2b7 5101 }
bffbf940
JJ
5102 break;
5103
5104 case R_X86_64_TLSLD:
351f65ca
L
5105 if (! elf_x86_64_tls_transition (info, input_bfd,
5106 input_section, contents,
5107 symtab_hdr, sym_hashes,
5108 &r_type, GOT_UNKNOWN,
5109 rel, relend, h, r_symndx))
142411ca 5110 return FALSE;
a3fadc9a 5111
142411ca
L
5112 if (r_type != R_X86_64_TLSLD)
5113 {
bffbf940 5114 /* LD->LE transition:
a3fadc9a 5115 leaq foo@tlsld(%rip), %rdi; call __tls_get_addr.
52bc799a
L
5116 For 64bit, we change it into:
5117 .word 0x6666; .byte 0x66; movq %fs:0, %rax.
5118 For 32bit, we change it into:
5c98a14e
JJ
5119 nopl 0x0(%rax); movl %fs:0, %eax.
5120 For largepic, change:
5121 leaq foo@tlsgd(%rip), %rdi
5122 movabsq $__tls_get_addr@pltoff, %rax
5123 addq %rbx, %rax
5124 call *%rax
5125 into:
5126 data32 data32 data32 nopw %cs:0x0(%rax,%rax,1)
5127 movq %fs:0, %eax */
142411ca
L
5128
5129 BFD_ASSERT (r_type == R_X86_64_TPOFF32);
5c98a14e
JJ
5130 if (ABI_64_P (output_bfd)
5131 && contents[rel->r_offset + 5] == (bfd_byte) '\xb8')
5132 memcpy (contents + rel->r_offset - 3,
5133 "\x66\x66\x66\x66\x2e\x0f\x1f\x84\0\0\0\0\0"
5134 "\x64\x48\x8b\x04\x25\0\0\0", 22);
5135 else if (ABI_64_P (output_bfd))
52bc799a
L
5136 memcpy (contents + rel->r_offset - 3,
5137 "\x66\x66\x66\x64\x48\x8b\x04\x25\0\0\0", 12);
5138 else
5139 memcpy (contents + rel->r_offset - 3,
5140 "\x0f\x1f\x40\x00\x64\x8b\x04\x25\0\0\0", 12);
5c98a14e 5141 /* Skip R_X86_64_PC32/R_X86_64_PLT32/R_X86_64_PLTOFF64. */
bffbf940
JJ
5142 rel++;
5143 continue;
5144 }
5145
6de2ae4a 5146 if (htab->elf.sgot == NULL)
bffbf940
JJ
5147 abort ();
5148
5149 off = htab->tls_ld_got.offset;
5150 if (off & 1)
5151 off &= ~1;
5152 else
5153 {
5154 Elf_Internal_Rela outrel;
bffbf940 5155
6de2ae4a 5156 if (htab->elf.srelgot == NULL)
bffbf940
JJ
5157 abort ();
5158
6de2ae4a
L
5159 outrel.r_offset = (htab->elf.sgot->output_section->vma
5160 + htab->elf.sgot->output_offset + off);
bffbf940
JJ
5161
5162 bfd_put_64 (output_bfd, 0,
6de2ae4a 5163 htab->elf.sgot->contents + off);
bffbf940 5164 bfd_put_64 (output_bfd, 0,
6de2ae4a 5165 htab->elf.sgot->contents + off + GOT_ENTRY_SIZE);
351f65ca 5166 outrel.r_info = htab->r_info (0, R_X86_64_DTPMOD64);
bffbf940 5167 outrel.r_addend = 0;
351f65ca 5168 elf_append_rela (output_bfd, htab->elf.srelgot,
464d3bd4 5169 &outrel);
bffbf940
JJ
5170 htab->tls_ld_got.offset |= 1;
5171 }
6de2ae4a
L
5172 relocation = htab->elf.sgot->output_section->vma
5173 + htab->elf.sgot->output_offset + off;
b34976b6 5174 unresolved_reloc = FALSE;
bffbf940
JJ
5175 break;
5176
5177 case R_X86_64_DTPOFF32:
0e1862bb
L
5178 if (!bfd_link_executable (info)
5179 || (input_section->flags & SEC_CODE) == 0)
351f65ca 5180 relocation -= elf_x86_64_dtpoff_base (info);
bffbf940 5181 else
351f65ca 5182 relocation = elf_x86_64_tpoff (info, relocation);
bffbf940
JJ
5183 break;
5184
5185 case R_X86_64_TPOFF32:
6769d501 5186 case R_X86_64_TPOFF64:
0e1862bb 5187 BFD_ASSERT (bfd_link_executable (info));
351f65ca 5188 relocation = elf_x86_64_tpoff (info, relocation);
bffbf940
JJ
5189 break;
5190
a69ed7f7
L
5191 case R_X86_64_DTPOFF64:
5192 BFD_ASSERT ((input_section->flags & SEC_CODE) == 0);
5193 relocation -= elf_x86_64_dtpoff_base (info);
5194 break;
5195
70256ad8
AJ
5196 default:
5197 break;
5198 }
8d88c4ca 5199
239e1f3a
AM
5200 /* Dynamic relocs are not propagated for SEC_DEBUGGING sections
5201 because such sections are not SEC_ALLOC and thus ld.so will
5202 not process them. */
c434dee6 5203 if (unresolved_reloc
239e1f3a 5204 && !((input_section->flags & SEC_DEBUGGING) != 0
1d5316ab
AM
5205 && h->def_dynamic)
5206 && _bfd_elf_section_offset (output_bfd, info, input_section,
5207 rel->r_offset) != (bfd_vma) -1)
a040981f
L
5208 {
5209 (*_bfd_error_handler)
5210 (_("%B(%A+0x%lx): unresolvable %s relocation against symbol `%s'"),
5211 input_bfd,
5212 input_section,
5213 (long) rel->r_offset,
5214 howto->name,
5215 h->root.root.string);
5216 return FALSE;
5217 }
c434dee6 5218
cbe950e9 5219do_relocation:
8d88c4ca 5220 r = _bfd_final_link_relocate (howto, input_bfd, input_section,
c434dee6
AJ
5221 contents, rel->r_offset,
5222 relocation, rel->r_addend);
8d88c4ca 5223
62d78908 5224check_relocation_error:
8d88c4ca 5225 if (r != bfd_reloc_ok)
8da6118f 5226 {
c434dee6
AJ
5227 const char *name;
5228
5229 if (h != NULL)
5230 name = h->root.root.string;
5231 else
8da6118f 5232 {
c434dee6
AJ
5233 name = bfd_elf_string_from_elf_section (input_bfd,
5234 symtab_hdr->sh_link,
5235 sym->st_name);
5236 if (name == NULL)
b34976b6 5237 return FALSE;
c434dee6
AJ
5238 if (*name == '\0')
5239 name = bfd_section_name (input_bfd, sec);
5240 }
5241
5242 if (r == bfd_reloc_overflow)
5243 {
c434dee6 5244 if (! ((*info->callbacks->reloc_overflow)
dfeffb9f
L
5245 (info, (h ? &h->root : NULL), name, howto->name,
5246 (bfd_vma) 0, input_bfd, input_section,
5247 rel->r_offset)))
b34976b6 5248 return FALSE;
c434dee6
AJ
5249 }
5250 else
5251 {
5252 (*_bfd_error_handler)
bb95161d 5253 (_("%B(%A+0x%lx): reloc against `%s': error %d"),
d003868e 5254 input_bfd, input_section,
c434dee6 5255 (long) rel->r_offset, name, (int) r);
b34976b6 5256 return FALSE;
8da6118f
KH
5257 }
5258 }
8d88c4ca 5259 }
70256ad8 5260
b34976b6 5261 return TRUE;
70256ad8
AJ
5262}
5263
5264/* Finish up dynamic symbol handling. We set the contents of various
5265 dynamic sections here. */
5266
b34976b6 5267static bfd_boolean
351f65ca
L
5268elf_x86_64_finish_dynamic_symbol (bfd *output_bfd,
5269 struct bfd_link_info *info,
5270 struct elf_link_hash_entry *h,
220cf809 5271 Elf_Internal_Sym *sym ATTRIBUTE_UNUSED)
70256ad8 5272{
351f65ca 5273 struct elf_x86_64_link_hash_table *htab;
0ff2b86e
L
5274 const struct elf_x86_64_backend_data *abed;
5275 bfd_boolean use_plt_bnd;
dd7e64d4 5276 struct elf_x86_64_link_hash_entry *eh;
70256ad8 5277
351f65ca 5278 htab = elf_x86_64_hash_table (info);
4dfe6ac6
NC
5279 if (htab == NULL)
5280 return FALSE;
70256ad8 5281
0ff2b86e
L
5282 /* Use MPX backend data in case of BND relocation. Use .plt_bnd
5283 section only if there is .plt section. */
5284 use_plt_bnd = htab->elf.splt != NULL && htab->plt_bnd != NULL;
5285 abed = (use_plt_bnd
5286 ? &elf_x86_64_bnd_arch_bed
5287 : get_elf_x86_64_backend_data (output_bfd));
5288
dd7e64d4
L
5289 eh = (struct elf_x86_64_link_hash_entry *) h;
5290
70256ad8
AJ
5291 if (h->plt.offset != (bfd_vma) -1)
5292 {
70256ad8 5293 bfd_vma plt_index;
0ff2b86e
L
5294 bfd_vma got_offset, plt_offset, plt_plt_offset, plt_got_offset;
5295 bfd_vma plt_plt_insn_end, plt_got_insn_size;
70256ad8 5296 Elf_Internal_Rela rela;
947216bf 5297 bfd_byte *loc;
0ff2b86e 5298 asection *plt, *gotplt, *relplt, *resolved_plt;
351f65ca 5299 const struct elf_backend_data *bed;
5974eba6 5300 bfd_vma plt_got_pcrel_offset;
cbe950e9
L
5301
5302 /* When building a static executable, use .iplt, .igot.plt and
5303 .rela.iplt sections for STT_GNU_IFUNC symbols. */
6de2ae4a 5304 if (htab->elf.splt != NULL)
cbe950e9 5305 {
6de2ae4a
L
5306 plt = htab->elf.splt;
5307 gotplt = htab->elf.sgotplt;
5308 relplt = htab->elf.srelplt;
cbe950e9
L
5309 }
5310 else
5311 {
6de2ae4a
L
5312 plt = htab->elf.iplt;
5313 gotplt = htab->elf.igotplt;
5314 relplt = htab->elf.irelplt;
cbe950e9 5315 }
70256ad8
AJ
5316
5317 /* This symbol has an entry in the procedure linkage table. Set
407443a3 5318 it up. */
cbe950e9 5319 if ((h->dynindx == -1
0e1862bb 5320 && !((h->forced_local || bfd_link_executable (info))
cbe950e9
L
5321 && h->def_regular
5322 && h->type == STT_GNU_IFUNC))
5323 || plt == NULL
5324 || gotplt == NULL
5325 || relplt == NULL)
cec7f46a 5326 abort ();
70256ad8
AJ
5327
5328 /* Get the index in the procedure linkage table which
5329 corresponds to this symbol. This is the index of this symbol
5330 in all the symbols for which we are making plt entries. The
cbe950e9 5331 first entry in the procedure linkage table is reserved.
6bbec505 5332
cbe950e9 5333 Get the offset into the .got table of the entry that
407443a3 5334 corresponds to this function. Each .got entry is GOT_ENTRY_SIZE
cbe950e9
L
5335 bytes. The first three are reserved for the dynamic linker.
5336
5337 For static executables, we don't reserve anything. */
5338
6de2ae4a 5339 if (plt == htab->elf.splt)
cbe950e9 5340 {
eed180f8 5341 got_offset = h->plt.offset / abed->plt_entry_size - 1;
e1f98742 5342 got_offset = (got_offset + 3) * GOT_ENTRY_SIZE;
cbe950e9
L
5343 }
5344 else
5345 {
eed180f8 5346 got_offset = h->plt.offset / abed->plt_entry_size;
e1f98742 5347 got_offset = got_offset * GOT_ENTRY_SIZE;
cbe950e9 5348 }
70256ad8 5349
0ff2b86e
L
5350 plt_plt_insn_end = abed->plt_plt_insn_end;
5351 plt_plt_offset = abed->plt_plt_offset;
5352 plt_got_insn_size = abed->plt_got_insn_size;
5353 plt_got_offset = abed->plt_got_offset;
5354 if (use_plt_bnd)
5355 {
5356 /* Use the second PLT with BND relocations. */
5357 const bfd_byte *plt_entry, *plt2_entry;
0ff2b86e
L
5358
5359 if (eh->has_bnd_reloc)
5360 {
5361 plt_entry = elf_x86_64_bnd_plt_entry;
5362 plt2_entry = elf_x86_64_bnd_plt2_entry;
5363 }
5364 else
5365 {
5366 plt_entry = elf_x86_64_legacy_plt_entry;
5367 plt2_entry = elf_x86_64_legacy_plt2_entry;
5368
5369 /* Subtract 1 since there is no BND prefix. */
5370 plt_plt_insn_end -= 1;
5371 plt_plt_offset -= 1;
5372 plt_got_insn_size -= 1;
5373 plt_got_offset -= 1;
5374 }
5375
5376 BFD_ASSERT (sizeof (elf_x86_64_bnd_plt_entry)
5377 == sizeof (elf_x86_64_legacy_plt_entry));
5378
5379 /* Fill in the entry in the procedure linkage table. */
5380 memcpy (plt->contents + h->plt.offset,
5381 plt_entry, sizeof (elf_x86_64_legacy_plt_entry));
5382 /* Fill in the entry in the second PLT. */
5383 memcpy (htab->plt_bnd->contents + eh->plt_bnd.offset,
5384 plt2_entry, sizeof (elf_x86_64_legacy_plt2_entry));
5385
5386 resolved_plt = htab->plt_bnd;
5387 plt_offset = eh->plt_bnd.offset;
5388 }
5389 else
5390 {
5391 /* Fill in the entry in the procedure linkage table. */
5392 memcpy (plt->contents + h->plt.offset, abed->plt_entry,
5393 abed->plt_entry_size);
5394
5395 resolved_plt = plt;
5396 plt_offset = h->plt.offset;
5397 }
eed180f8
RM
5398
5399 /* Insert the relocation positions of the plt section. */
5400
5401 /* Put offset the PC-relative instruction referring to the GOT entry,
5402 subtracting the size of that instruction. */
ab7fede8
L
5403 plt_got_pcrel_offset = (gotplt->output_section->vma
5404 + gotplt->output_offset
5405 + got_offset
5406 - resolved_plt->output_section->vma
5407 - resolved_plt->output_offset
5408 - plt_offset
5409 - plt_got_insn_size);
5410
5411 /* Check PC-relative offset overflow in PLT entry. */
5974eba6 5412 if ((plt_got_pcrel_offset + 0x80000000) > 0xffffffff)
ab7fede8
L
5413 info->callbacks->einfo (_("%F%B: PC-relative offset overflow in PLT entry for `%s'\n"),
5414 output_bfd, h->root.root.string);
5415
5416 bfd_put_32 (output_bfd, plt_got_pcrel_offset,
0ff2b86e 5417 resolved_plt->contents + plt_offset + plt_got_offset);
cbe950e9 5418
653165cc 5419 /* Fill in the entry in the global offset table, initially this
eed180f8 5420 points to the second part of the PLT entry. */
cbe950e9
L
5421 bfd_put_64 (output_bfd, (plt->output_section->vma
5422 + plt->output_offset
eed180f8 5423 + h->plt.offset + abed->plt_lazy_offset),
cbe950e9 5424 gotplt->contents + got_offset);
70256ad8
AJ
5425
5426 /* Fill in the entry in the .rela.plt section. */
cbe950e9
L
5427 rela.r_offset = (gotplt->output_section->vma
5428 + gotplt->output_offset
70256ad8 5429 + got_offset);
cbe950e9 5430 if (h->dynindx == -1
0e1862bb 5431 || ((bfd_link_executable (info)
cbe950e9
L
5432 || ELF_ST_VISIBILITY (h->other) != STV_DEFAULT)
5433 && h->def_regular
5434 && h->type == STT_GNU_IFUNC))
5435 {
5436 /* If an STT_GNU_IFUNC symbol is locally defined, generate
5437 R_X86_64_IRELATIVE instead of R_X86_64_JUMP_SLOT. */
351f65ca 5438 rela.r_info = htab->r_info (0, R_X86_64_IRELATIVE);
cbe950e9
L
5439 rela.r_addend = (h->root.u.def.value
5440 + h->root.u.def.section->output_section->vma
5441 + h->root.u.def.section->output_offset);
e1f98742
L
5442 /* R_X86_64_IRELATIVE comes last. */
5443 plt_index = htab->next_irelative_index--;
cbe950e9
L
5444 }
5445 else
5446 {
351f65ca 5447 rela.r_info = htab->r_info (h->dynindx, R_X86_64_JUMP_SLOT);
cbe950e9 5448 rela.r_addend = 0;
e1f98742
L
5449 plt_index = htab->next_jump_slot_index++;
5450 }
5451
5452 /* Don't fill PLT entry for static executables. */
5453 if (plt == htab->elf.splt)
5454 {
35a14c6b
L
5455 bfd_vma plt0_offset = h->plt.offset + plt_plt_insn_end;
5456
e1f98742
L
5457 /* Put relocation index. */
5458 bfd_put_32 (output_bfd, plt_index,
eed180f8 5459 plt->contents + h->plt.offset + abed->plt_reloc_offset);
35a14c6b
L
5460
5461 /* Put offset for jmp .PLT0 and check for overflow. We don't
5462 check relocation index for overflow since branch displacement
5463 will overflow first. */
5464 if (plt0_offset > 0x80000000)
5465 info->callbacks->einfo (_("%F%B: branch displacement overflow in PLT entry for `%s'\n"),
5466 output_bfd, h->root.root.string);
5467 bfd_put_32 (output_bfd, - plt0_offset,
0ff2b86e 5468 plt->contents + h->plt.offset + plt_plt_offset);
cbe950e9 5469 }
351f65ca
L
5470
5471 bed = get_elf_backend_data (output_bfd);
5472 loc = relplt->contents + plt_index * bed->s->sizeof_rela;
82e96e07 5473 bed->s->swap_reloca_out (output_bfd, &rela, loc);
dd7e64d4
L
5474 }
5475 else if (eh->plt_got.offset != (bfd_vma) -1)
5476 {
5477 bfd_vma got_offset, plt_offset, plt_got_offset, plt_got_insn_size;
5478 asection *plt, *got;
5479 bfd_boolean got_after_plt;
5480 int32_t got_pcrel_offset;
5481 const bfd_byte *got_plt_entry;
5482
5483 /* Set the entry in the GOT procedure linkage table. */
5484 plt = htab->plt_got;
5485 got = htab->elf.sgot;
5486 got_offset = h->got.offset;
5487
5488 if (got_offset == (bfd_vma) -1
5489 || h->type == STT_GNU_IFUNC
5490 || plt == NULL
5491 || got == NULL)
5492 abort ();
70256ad8 5493
dd7e64d4
L
5494 /* Use the second PLT entry template for the GOT PLT since they
5495 are the identical. */
5496 plt_got_insn_size = elf_x86_64_bnd_arch_bed.plt_got_insn_size;
5497 plt_got_offset = elf_x86_64_bnd_arch_bed.plt_got_offset;
5498 if (eh->has_bnd_reloc)
5499 got_plt_entry = elf_x86_64_bnd_plt2_entry;
5500 else
70256ad8 5501 {
dd7e64d4
L
5502 got_plt_entry = elf_x86_64_legacy_plt2_entry;
5503
5504 /* Subtract 1 since there is no BND prefix. */
5505 plt_got_insn_size -= 1;
5506 plt_got_offset -= 1;
70256ad8 5507 }
dd7e64d4
L
5508
5509 /* Fill in the entry in the GOT procedure linkage table. */
5510 plt_offset = eh->plt_got.offset;
5511 memcpy (plt->contents + plt_offset,
5512 got_plt_entry, sizeof (elf_x86_64_legacy_plt2_entry));
5513
5514 /* Put offset the PC-relative instruction referring to the GOT
5515 entry, subtracting the size of that instruction. */
5516 got_pcrel_offset = (got->output_section->vma
5517 + got->output_offset
5518 + got_offset
5519 - plt->output_section->vma
5520 - plt->output_offset
5521 - plt_offset
5522 - plt_got_insn_size);
5523
5524 /* Check PC-relative offset overflow in GOT PLT entry. */
5525 got_after_plt = got->output_section->vma > plt->output_section->vma;
5526 if ((got_after_plt && got_pcrel_offset < 0)
5527 || (!got_after_plt && got_pcrel_offset > 0))
5528 info->callbacks->einfo (_("%F%B: PC-relative offset overflow in GOT PLT entry for `%s'\n"),
5529 output_bfd, h->root.root.string);
5530
5531 bfd_put_32 (output_bfd, got_pcrel_offset,
5532 plt->contents + plt_offset + plt_got_offset);
5533 }
5534
5535 if (!h->def_regular
5536 && (h->plt.offset != (bfd_vma) -1
5537 || eh->plt_got.offset != (bfd_vma) -1))
5538 {
5539 /* Mark the symbol as undefined, rather than as defined in
5540 the .plt section. Leave the value if there were any
5541 relocations where pointer equality matters (this is a clue
5542 for the dynamic linker, to make function pointer
5543 comparisons work between an application and shared
5544 library), otherwise set it to zero. If a function is only
5545 called from a binary, there is no need to slow down
5546 shared libraries because of that. */
5547 sym->st_shndx = SHN_UNDEF;
5548 if (!h->pointer_equality_needed)
5549 sym->st_value = 0;
70256ad8
AJ
5550 }
5551
bffbf940 5552 if (h->got.offset != (bfd_vma) -1
351f65ca
L
5553 && ! GOT_TLS_GD_ANY_P (elf_x86_64_hash_entry (h)->tls_type)
5554 && elf_x86_64_hash_entry (h)->tls_type != GOT_TLS_IE)
053579d7 5555 {
053579d7
AJ
5556 Elf_Internal_Rela rela;
5557
5558 /* This symbol has an entry in the global offset table. Set it
bffbf940 5559 up. */
6de2ae4a 5560 if (htab->elf.sgot == NULL || htab->elf.srelgot == NULL)
c434dee6 5561 abort ();
053579d7 5562
6de2ae4a
L
5563 rela.r_offset = (htab->elf.sgot->output_section->vma
5564 + htab->elf.sgot->output_offset
dc810e39 5565 + (h->got.offset &~ (bfd_vma) 1));
053579d7
AJ
5566
5567 /* If this is a static link, or it is a -Bsymbolic link and the
5568 symbol is defined locally or was forced to be local because
5569 of a version file, we just want to emit a RELATIVE reloc.
5570 The entry in the global offset table will already have been
5571 initialized in the relocate_section function. */
710ab287 5572 if (h->def_regular
0018b0a3
L
5573 && h->type == STT_GNU_IFUNC)
5574 {
0e1862bb 5575 if (bfd_link_pic (info))
710ab287
L
5576 {
5577 /* Generate R_X86_64_GLOB_DAT. */
5578 goto do_glob_dat;
5579 }
5580 else
5581 {
90d60710
L
5582 asection *plt;
5583
710ab287
L
5584 if (!h->pointer_equality_needed)
5585 abort ();
5586
5587 /* For non-shared object, we can't use .got.plt, which
5588 contains the real function addres if we need pointer
5589 equality. We load the GOT entry with the PLT entry. */
90d60710 5590 plt = htab->elf.splt ? htab->elf.splt : htab->elf.iplt;
710ab287
L
5591 bfd_put_64 (output_bfd, (plt->output_section->vma
5592 + plt->output_offset
5593 + h->plt.offset),
6de2ae4a 5594 htab->elf.sgot->contents + h->got.offset);
710ab287
L
5595 return TRUE;
5596 }
0018b0a3 5597 }
0e1862bb 5598 else if (bfd_link_pic (info)
0018b0a3 5599 && SYMBOL_REFERENCES_LOCAL (info, h))
053579d7 5600 {
41bed6dd
L
5601 if (!h->def_regular)
5602 return FALSE;
cc78d0af 5603 BFD_ASSERT((h->got.offset & 1) != 0);
351f65ca 5604 rela.r_info = htab->r_info (0, R_X86_64_RELATIVE);
053579d7
AJ
5605 rela.r_addend = (h->root.u.def.value
5606 + h->root.u.def.section->output_section->vma
5607 + h->root.u.def.section->output_offset);
5608 }
5609 else
5610 {
5611 BFD_ASSERT((h->got.offset & 1) == 0);
710ab287 5612do_glob_dat:
c434dee6 5613 bfd_put_64 (output_bfd, (bfd_vma) 0,
6de2ae4a 5614 htab->elf.sgot->contents + h->got.offset);
351f65ca 5615 rela.r_info = htab->r_info (h->dynindx, R_X86_64_GLOB_DAT);
053579d7
AJ
5616 rela.r_addend = 0;
5617 }
5618
351f65ca 5619 elf_append_rela (output_bfd, htab->elf.srelgot, &rela);
053579d7
AJ
5620 }
5621
f5385ebf 5622 if (h->needs_copy)
70256ad8 5623 {
70256ad8
AJ
5624 Elf_Internal_Rela rela;
5625
5626 /* This symbol needs a copy reloc. Set it up. */
5627
c434dee6
AJ
5628 if (h->dynindx == -1
5629 || (h->root.type != bfd_link_hash_defined
5630 && h->root.type != bfd_link_hash_defweak)
5631 || htab->srelbss == NULL)
5632 abort ();
70256ad8
AJ
5633
5634 rela.r_offset = (h->root.u.def.value
5635 + h->root.u.def.section->output_section->vma
5636 + h->root.u.def.section->output_offset);
351f65ca 5637 rela.r_info = htab->r_info (h->dynindx, R_X86_64_COPY);
70256ad8 5638 rela.r_addend = 0;
351f65ca 5639 elf_append_rela (output_bfd, htab->srelbss, &rela);
70256ad8
AJ
5640 }
5641
b34976b6 5642 return TRUE;
70256ad8
AJ
5643}
5644
c25bc9fc
L
5645/* Finish up local dynamic symbol handling. We set the contents of
5646 various dynamic sections here. */
5647
5648static bfd_boolean
351f65ca 5649elf_x86_64_finish_local_dynamic_symbol (void **slot, void *inf)
c25bc9fc
L
5650{
5651 struct elf_link_hash_entry *h
5652 = (struct elf_link_hash_entry *) *slot;
5653 struct bfd_link_info *info
eed180f8 5654 = (struct bfd_link_info *) inf;
c25bc9fc 5655
351f65ca 5656 return elf_x86_64_finish_dynamic_symbol (info->output_bfd,
c25bc9fc
L
5657 info, h, NULL);
5658}
5659
c434dee6
AJ
5660/* Used to decide how to sort relocs in an optimal manner for the
5661 dynamic linker, before writing them out. */
5662
5663static enum elf_reloc_type_class
cae1fbbb 5664elf_x86_64_reloc_type_class (const struct bfd_link_info *info,
7e612e98
AM
5665 const asection *rel_sec ATTRIBUTE_UNUSED,
5666 const Elf_Internal_Rela *rela)
c434dee6 5667{
cae1fbbb
L
5668 bfd *abfd = info->output_bfd;
5669 const struct elf_backend_data *bed = get_elf_backend_data (abfd);
5670 struct elf_x86_64_link_hash_table *htab = elf_x86_64_hash_table (info);
5671 unsigned long r_symndx = htab->r_sym (rela->r_info);
5672 Elf_Internal_Sym sym;
5673
5674 if (htab->elf.dynsym == NULL
5675 || !bed->s->swap_symbol_in (abfd,
5676 (htab->elf.dynsym->contents
5677 + r_symndx * bed->s->sizeof_sym),
5678 0, &sym))
5679 abort ();
5680
5681 /* Check relocation against STT_GNU_IFUNC symbol. */
5682 if (ELF_ST_TYPE (sym.st_info) == STT_GNU_IFUNC)
5683 return reloc_class_ifunc;
5684
351f65ca 5685 switch ((int) ELF32_R_TYPE (rela->r_info))
c434dee6
AJ
5686 {
5687 case R_X86_64_RELATIVE:
1da80baa 5688 case R_X86_64_RELATIVE64:
c434dee6
AJ
5689 return reloc_class_relative;
5690 case R_X86_64_JUMP_SLOT:
5691 return reloc_class_plt;
5692 case R_X86_64_COPY:
5693 return reloc_class_copy;
5694 default:
5695 return reloc_class_normal;
5696 }
5697}
5698
70256ad8
AJ
5699/* Finish up the dynamic sections. */
5700
b34976b6 5701static bfd_boolean
351f65ca
L
5702elf_x86_64_finish_dynamic_sections (bfd *output_bfd,
5703 struct bfd_link_info *info)
70256ad8 5704{
351f65ca 5705 struct elf_x86_64_link_hash_table *htab;
70256ad8
AJ
5706 bfd *dynobj;
5707 asection *sdyn;
0ff2b86e 5708 const struct elf_x86_64_backend_data *abed;
70256ad8 5709
351f65ca 5710 htab = elf_x86_64_hash_table (info);
4dfe6ac6
NC
5711 if (htab == NULL)
5712 return FALSE;
5713
0ff2b86e
L
5714 /* Use MPX backend data in case of BND relocation. Use .plt_bnd
5715 section only if there is .plt section. */
5716 abed = (htab->elf.splt != NULL && htab->plt_bnd != NULL
5717 ? &elf_x86_64_bnd_arch_bed
5718 : get_elf_x86_64_backend_data (output_bfd));
5719
c434dee6 5720 dynobj = htab->elf.dynobj;
3d4d4302 5721 sdyn = bfd_get_linker_section (dynobj, ".dynamic");
70256ad8 5722
c434dee6 5723 if (htab->elf.dynamic_sections_created)
70256ad8 5724 {
82e96e07
L
5725 bfd_byte *dyncon, *dynconend;
5726 const struct elf_backend_data *bed;
5727 bfd_size_type sizeof_dyn;
70256ad8 5728
6de2ae4a 5729 if (sdyn == NULL || htab->elf.sgot == NULL)
c434dee6 5730 abort ();
70256ad8 5731
82e96e07
L
5732 bed = get_elf_backend_data (dynobj);
5733 sizeof_dyn = bed->s->sizeof_dyn;
5734 dyncon = sdyn->contents;
5735 dynconend = sdyn->contents + sdyn->size;
5736 for (; dyncon < dynconend; dyncon += sizeof_dyn)
70256ad8
AJ
5737 {
5738 Elf_Internal_Dyn dyn;
70256ad8
AJ
5739 asection *s;
5740
82e96e07 5741 (*bed->s->swap_dyn_in) (dynobj, dyncon, &dyn);
70256ad8
AJ
5742
5743 switch (dyn.d_tag)
5744 {
5745 default:
053579d7 5746 continue;
70256ad8
AJ
5747
5748 case DT_PLTGOT:
6de2ae4a 5749 s = htab->elf.sgotplt;
8c37241b 5750 dyn.d_un.d_ptr = s->output_section->vma + s->output_offset;
c434dee6 5751 break;
70256ad8
AJ
5752
5753 case DT_JMPREL:
6de2ae4a 5754 dyn.d_un.d_ptr = htab->elf.srelplt->output_section->vma;
c434dee6 5755 break;
70256ad8 5756
c434dee6 5757 case DT_PLTRELSZ:
6de2ae4a 5758 s = htab->elf.srelplt->output_section;
eea6121a 5759 dyn.d_un.d_val = s->size;
70256ad8
AJ
5760 break;
5761
5762 case DT_RELASZ:
c434dee6
AJ
5763 /* The procedure linkage table relocs (DT_JMPREL) should
5764 not be included in the overall relocs (DT_RELA).
5765 Therefore, we override the DT_RELASZ entry here to
5766 make it not include the JMPREL relocs. Since the
5767 linker script arranges for .rela.plt to follow all
5768 other relocation sections, we don't have to worry
5769 about changing the DT_RELA entry. */
6de2ae4a 5770 if (htab->elf.srelplt != NULL)
70256ad8 5771 {
6de2ae4a 5772 s = htab->elf.srelplt->output_section;
eea6121a 5773 dyn.d_un.d_val -= s->size;
70256ad8
AJ
5774 }
5775 break;
67a4f2b7
AO
5776
5777 case DT_TLSDESC_PLT:
6de2ae4a 5778 s = htab->elf.splt;
67a4f2b7
AO
5779 dyn.d_un.d_ptr = s->output_section->vma + s->output_offset
5780 + htab->tlsdesc_plt;
5781 break;
5782
5783 case DT_TLSDESC_GOT:
6de2ae4a 5784 s = htab->elf.sgot;
67a4f2b7
AO
5785 dyn.d_un.d_ptr = s->output_section->vma + s->output_offset
5786 + htab->tlsdesc_got;
5787 break;
70256ad8 5788 }
c434dee6 5789
82e96e07 5790 (*bed->s->swap_dyn_out) (output_bfd, &dyn, dyncon);
70256ad8
AJ
5791 }
5792
c434dee6 5793 /* Fill in the special first entry in the procedure linkage table. */
6de2ae4a 5794 if (htab->elf.splt && htab->elf.splt->size > 0)
70256ad8 5795 {
653165cc 5796 /* Fill in the first entry in the procedure linkage table. */
eed180f8
RM
5797 memcpy (htab->elf.splt->contents,
5798 abed->plt0_entry, abed->plt_entry_size);
653165cc
AJ
5799 /* Add offset for pushq GOT+8(%rip), since the instruction
5800 uses 6 bytes subtract this value. */
5801 bfd_put_32 (output_bfd,
6de2ae4a
L
5802 (htab->elf.sgotplt->output_section->vma
5803 + htab->elf.sgotplt->output_offset
653165cc 5804 + 8
6de2ae4a
L
5805 - htab->elf.splt->output_section->vma
5806 - htab->elf.splt->output_offset
653165cc 5807 - 6),
eed180f8
RM
5808 htab->elf.splt->contents + abed->plt0_got1_offset);
5809 /* Add offset for the PC-relative instruction accessing GOT+16,
5810 subtracting the offset to the end of that instruction. */
653165cc 5811 bfd_put_32 (output_bfd,
6de2ae4a
L
5812 (htab->elf.sgotplt->output_section->vma
5813 + htab->elf.sgotplt->output_offset
653165cc 5814 + 16
6de2ae4a
L
5815 - htab->elf.splt->output_section->vma
5816 - htab->elf.splt->output_offset
eed180f8
RM
5817 - abed->plt0_got2_insn_end),
5818 htab->elf.splt->contents + abed->plt0_got2_offset);
653165cc 5819
eed180f8
RM
5820 elf_section_data (htab->elf.splt->output_section)
5821 ->this_hdr.sh_entsize = abed->plt_entry_size;
67a4f2b7
AO
5822
5823 if (htab->tlsdesc_plt)
5824 {
5825 bfd_put_64 (output_bfd, (bfd_vma) 0,
6de2ae4a 5826 htab->elf.sgot->contents + htab->tlsdesc_got);
67a4f2b7 5827
6de2ae4a 5828 memcpy (htab->elf.splt->contents + htab->tlsdesc_plt,
eed180f8 5829 abed->plt0_entry, abed->plt_entry_size);
67a4f2b7
AO
5830
5831 /* Add offset for pushq GOT+8(%rip), since the
5832 instruction uses 6 bytes subtract this value. */
5833 bfd_put_32 (output_bfd,
6de2ae4a
L
5834 (htab->elf.sgotplt->output_section->vma
5835 + htab->elf.sgotplt->output_offset
67a4f2b7 5836 + 8
6de2ae4a
L
5837 - htab->elf.splt->output_section->vma
5838 - htab->elf.splt->output_offset
67a4f2b7
AO
5839 - htab->tlsdesc_plt
5840 - 6),
eed180f8
RM
5841 htab->elf.splt->contents
5842 + htab->tlsdesc_plt + abed->plt0_got1_offset);
5843 /* Add offset for the PC-relative instruction accessing GOT+TDG,
5844 where TGD stands for htab->tlsdesc_got, subtracting the offset
5845 to the end of that instruction. */
67a4f2b7 5846 bfd_put_32 (output_bfd,
6de2ae4a
L
5847 (htab->elf.sgot->output_section->vma
5848 + htab->elf.sgot->output_offset
67a4f2b7 5849 + htab->tlsdesc_got
6de2ae4a
L
5850 - htab->elf.splt->output_section->vma
5851 - htab->elf.splt->output_offset
67a4f2b7 5852 - htab->tlsdesc_plt
eed180f8
RM
5853 - abed->plt0_got2_insn_end),
5854 htab->elf.splt->contents
5855 + htab->tlsdesc_plt + abed->plt0_got2_offset);
67a4f2b7 5856 }
70256ad8 5857 }
70256ad8
AJ
5858 }
5859
0ff2b86e
L
5860 if (htab->plt_bnd != NULL)
5861 elf_section_data (htab->plt_bnd->output_section)
5862 ->this_hdr.sh_entsize = sizeof (elf_x86_64_bnd_plt2_entry);
5863
6de2ae4a 5864 if (htab->elf.sgotplt)
70256ad8 5865 {
56d4289c
L
5866 if (bfd_is_abs_section (htab->elf.sgotplt->output_section))
5867 {
5868 (*_bfd_error_handler)
5869 (_("discarded output section: `%A'"), htab->elf.sgotplt);
5870 return FALSE;
5871 }
5872
c434dee6 5873 /* Fill in the first three entries in the global offset table. */
6de2ae4a 5874 if (htab->elf.sgotplt->size > 0)
c434dee6
AJ
5875 {
5876 /* Set the first entry in the global offset table to the address of
5877 the dynamic section. */
5878 if (sdyn == NULL)
6de2ae4a 5879 bfd_put_64 (output_bfd, (bfd_vma) 0, htab->elf.sgotplt->contents);
c434dee6
AJ
5880 else
5881 bfd_put_64 (output_bfd,
5882 sdyn->output_section->vma + sdyn->output_offset,
6de2ae4a 5883 htab->elf.sgotplt->contents);
c434dee6 5884 /* Write GOT[1] and GOT[2], needed for the dynamic linker. */
6de2ae4a
L
5885 bfd_put_64 (output_bfd, (bfd_vma) 0, htab->elf.sgotplt->contents + GOT_ENTRY_SIZE);
5886 bfd_put_64 (output_bfd, (bfd_vma) 0, htab->elf.sgotplt->contents + GOT_ENTRY_SIZE*2);
c434dee6 5887 }
70256ad8 5888
6de2ae4a 5889 elf_section_data (htab->elf.sgotplt->output_section)->this_hdr.sh_entsize =
c434dee6
AJ
5890 GOT_ENTRY_SIZE;
5891 }
70256ad8 5892
e41b3a13 5893 /* Adjust .eh_frame for .plt section. */
9a2a56cc
AM
5894 if (htab->plt_eh_frame != NULL
5895 && htab->plt_eh_frame->contents != NULL)
e41b3a13
JJ
5896 {
5897 if (htab->elf.splt != NULL
5898 && htab->elf.splt->size != 0
5899 && (htab->elf.splt->flags & SEC_EXCLUDE) == 0
5900 && htab->elf.splt->output_section != NULL
5901 && htab->plt_eh_frame->output_section != NULL)
5902 {
5903 bfd_vma plt_start = htab->elf.splt->output_section->vma;
5904 bfd_vma eh_frame_start = htab->plt_eh_frame->output_section->vma
5905 + htab->plt_eh_frame->output_offset
5906 + PLT_FDE_START_OFFSET;
5907 bfd_put_signed_32 (dynobj, plt_start - eh_frame_start,
5908 htab->plt_eh_frame->contents
5909 + PLT_FDE_START_OFFSET);
5910 }
dbaa2011 5911 if (htab->plt_eh_frame->sec_info_type == SEC_INFO_TYPE_EH_FRAME)
e41b3a13
JJ
5912 {
5913 if (! _bfd_elf_write_section_eh_frame (output_bfd, info,
5914 htab->plt_eh_frame,
5915 htab->plt_eh_frame->contents))
5916 return FALSE;
5917 }
5918 }
5919
6de2ae4a
L
5920 if (htab->elf.sgot && htab->elf.sgot->size > 0)
5921 elf_section_data (htab->elf.sgot->output_section)->this_hdr.sh_entsize
8c37241b
JJ
5922 = GOT_ENTRY_SIZE;
5923
c25bc9fc
L
5924 /* Fill PLT and GOT entries for local STT_GNU_IFUNC symbols. */
5925 htab_traverse (htab->loc_hash_table,
351f65ca 5926 elf_x86_64_finish_local_dynamic_symbol,
c25bc9fc
L
5927 info);
5928
b34976b6 5929 return TRUE;
8d88c4ca
NC
5930}
5931
3972882e 5932/* Return an array of PLT entry symbol values. */
4c45e5c9 5933
3972882e
L
5934static bfd_vma *
5935elf_x86_64_get_plt_sym_val (bfd *abfd, asymbol **dynsyms, asection *plt,
5936 asection *relplt)
4c45e5c9 5937{
3972882e
L
5938 bfd_boolean (*slurp_relocs) (bfd *, asection *, asymbol **, bfd_boolean);
5939 arelent *p;
5940 long count, i;
5941 bfd_vma *plt_sym_val;
144bed8d 5942 bfd_vma plt_offset;
3972882e
L
5943 bfd_byte *plt_contents;
5944 const struct elf_x86_64_backend_data *bed;
5945 Elf_Internal_Shdr *hdr;
5946 asection *plt_bnd;
144bed8d 5947
3972882e
L
5948 /* Get the .plt section contents. PLT passed down may point to the
5949 .plt.bnd section. Make sure that PLT always points to the .plt
5950 section. */
5951 plt_bnd = bfd_get_section_by_name (abfd, ".plt.bnd");
5952 if (plt_bnd)
5953 {
5954 if (plt != plt_bnd)
5955 abort ();
5956 plt = bfd_get_section_by_name (abfd, ".plt");
5957 if (plt == NULL)
5958 abort ();
5959 bed = &elf_x86_64_bnd_arch_bed;
5960 }
5961 else
5962 bed = get_elf_x86_64_backend_data (abfd);
cca5b8b6 5963
3972882e
L
5964 plt_contents = (bfd_byte *) bfd_malloc (plt->size);
5965 if (plt_contents == NULL)
5966 return NULL;
5967 if (!bfd_get_section_contents (abfd, (asection *) plt,
5968 plt_contents, 0, plt->size))
144bed8d 5969 {
3972882e
L
5970bad_return:
5971 free (plt_contents);
5972 return NULL;
144bed8d
L
5973 }
5974
3972882e
L
5975 slurp_relocs = get_elf_backend_data (abfd)->s->slurp_reloc_table;
5976 if (! (*slurp_relocs) (abfd, relplt, dynsyms, TRUE))
5977 goto bad_return;
144bed8d 5978
3972882e
L
5979 hdr = &elf_section_data (relplt)->this_hdr;
5980 count = relplt->size / hdr->sh_entsize;
144bed8d 5981
3972882e
L
5982 plt_sym_val = (bfd_vma *) bfd_malloc (sizeof (bfd_vma) * count);
5983 if (plt_sym_val == NULL)
5984 goto bad_return;
cca5b8b6 5985
35181b3e 5986 for (i = 0; i < count; i++)
3972882e 5987 plt_sym_val[i] = -1;
cca5b8b6 5988
3972882e
L
5989 plt_offset = bed->plt_entry_size;
5990 p = relplt->relocation;
5991 for (i = 0; i < count; i++, p++)
144bed8d 5992 {
3972882e 5993 long reloc_index;
144bed8d 5994
6f25f223 5995 /* Skip unknown relocation. */
533d0af0 5996 if (p->howto == NULL)
6f25f223 5997 continue;
533d0af0 5998
3972882e
L
5999 if (p->howto->type != R_X86_64_JUMP_SLOT
6000 && p->howto->type != R_X86_64_IRELATIVE)
6001 continue;
144bed8d 6002
3972882e
L
6003 reloc_index = H_GET_32 (abfd, (plt_contents + plt_offset
6004 + bed->plt_reloc_offset));
6005 if (reloc_index >= count)
6006 abort ();
6007 if (plt_bnd)
144bed8d
L
6008 {
6009 /* This is the index in .plt section. */
6010 long plt_index = plt_offset / bed->plt_entry_size;
3972882e
L
6011 /* Store VMA + the offset in .plt.bnd section. */
6012 plt_sym_val[reloc_index] =
6013 (plt_bnd->vma
6014 + (plt_index - 1) * sizeof (elf_x86_64_legacy_plt2_entry));
144bed8d 6015 }
3972882e
L
6016 else
6017 plt_sym_val[reloc_index] = plt->vma + plt_offset;
144bed8d 6018 plt_offset += bed->plt_entry_size;
fca6ae69
L
6019
6020 /* PR binutils/18437: Skip extra relocations in the .rela.plt
6021 section. */
6022 if (plt_offset >= plt->size)
6023 break;
144bed8d
L
6024 }
6025
3972882e
L
6026 free (plt_contents);
6027
6028 return plt_sym_val;
4c45e5c9 6029}
8df9fc9d 6030
0ff2b86e
L
6031/* Similar to _bfd_elf_get_synthetic_symtab, with .plt.bnd section
6032 support. */
6033
6034static long
6035elf_x86_64_get_synthetic_symtab (bfd *abfd,
6036 long symcount,
6037 asymbol **syms,
6038 long dynsymcount,
6039 asymbol **dynsyms,
6040 asymbol **ret)
6041{
3972882e
L
6042 /* Pass the .plt.bnd section to _bfd_elf_ifunc_get_synthetic_symtab
6043 as PLT if it exists. */
6044 asection *plt = bfd_get_section_by_name (abfd, ".plt.bnd");
0ff2b86e 6045 if (plt == NULL)
3972882e
L
6046 plt = bfd_get_section_by_name (abfd, ".plt");
6047 return _bfd_elf_ifunc_get_synthetic_symtab (abfd, symcount, syms,
6048 dynsymcount, dynsyms, ret,
6049 plt,
6050 elf_x86_64_get_plt_sym_val);
0ff2b86e
L
6051}
6052
d2b2c203
DJ
6053/* Handle an x86-64 specific section when reading an object file. This
6054 is called when elfcode.h finds a section with an unknown type. */
6055
6056static bfd_boolean
0c723101
L
6057elf_x86_64_section_from_shdr (bfd *abfd, Elf_Internal_Shdr *hdr,
6058 const char *name, int shindex)
d2b2c203
DJ
6059{
6060 if (hdr->sh_type != SHT_X86_64_UNWIND)
6061 return FALSE;
6062
6dc132d9 6063 if (! _bfd_elf_make_section_from_shdr (abfd, hdr, name, shindex))
d2b2c203
DJ
6064 return FALSE;
6065
6066 return TRUE;
6067}
6068
3b22753a
L
6069/* Hook called by the linker routine which adds symbols from an object
6070 file. We use it to put SHN_X86_64_LCOMMON items in .lbss, instead
6071 of .bss. */
6072
6073static bfd_boolean
351f65ca
L
6074elf_x86_64_add_symbol_hook (bfd *abfd,
6075 struct bfd_link_info *info,
6076 Elf_Internal_Sym *sym,
6077 const char **namep ATTRIBUTE_UNUSED,
6078 flagword *flagsp ATTRIBUTE_UNUSED,
6079 asection **secp,
6080 bfd_vma *valp)
3b22753a
L
6081{
6082 asection *lcomm;
6083
6084 switch (sym->st_shndx)
6085 {
6086 case SHN_X86_64_LCOMMON:
6087 lcomm = bfd_get_section_by_name (abfd, "LARGE_COMMON");
6088 if (lcomm == NULL)
6089 {
6090 lcomm = bfd_make_section_with_flags (abfd,
6091 "LARGE_COMMON",
6092 (SEC_ALLOC
6093 | SEC_IS_COMMON
6094 | SEC_LINKER_CREATED));
6095 if (lcomm == NULL)
6096 return FALSE;
6097 elf_section_flags (lcomm) |= SHF_X86_64_LARGE;
6098 }
6099 *secp = lcomm;
6100 *valp = sym->st_size;
c35bdf6e 6101 return TRUE;
3b22753a 6102 }
d8045f23 6103
13a2df29 6104 if (ELF_ST_BIND (sym->st_info) == STB_GNU_UNIQUE
f1885d1e
AM
6105 && (abfd->flags & DYNAMIC) == 0
6106 && bfd_get_flavour (info->output_bfd) == bfd_target_elf_flavour)
13a2df29
L
6107 elf_tdata (info->output_bfd)->has_gnu_symbols
6108 |= elf_gnu_symbol_unique;
d8045f23 6109
3b22753a
L
6110 return TRUE;
6111}
6112
6113
6114/* Given a BFD section, try to locate the corresponding ELF section
6115 index. */
6116
6117static bfd_boolean
351f65ca
L
6118elf_x86_64_elf_section_from_bfd_section (bfd *abfd ATTRIBUTE_UNUSED,
6119 asection *sec, int *index_return)
3b22753a
L
6120{
6121 if (sec == &_bfd_elf_large_com_section)
6122 {
91d6fa6a 6123 *index_return = SHN_X86_64_LCOMMON;
3b22753a
L
6124 return TRUE;
6125 }
6126 return FALSE;
6127}
6128
6129/* Process a symbol. */
6130
6131static void
351f65ca
L
6132elf_x86_64_symbol_processing (bfd *abfd ATTRIBUTE_UNUSED,
6133 asymbol *asym)
3b22753a
L
6134{
6135 elf_symbol_type *elfsym = (elf_symbol_type *) asym;
6136
6137 switch (elfsym->internal_elf_sym.st_shndx)
6138 {
6139 case SHN_X86_64_LCOMMON:
6140 asym->section = &_bfd_elf_large_com_section;
6141 asym->value = elfsym->internal_elf_sym.st_size;
6142 /* Common symbol doesn't set BSF_GLOBAL. */
6143 asym->flags &= ~BSF_GLOBAL;
6144 break;
6145 }
6146}
6147
6148static bfd_boolean
351f65ca 6149elf_x86_64_common_definition (Elf_Internal_Sym *sym)
3b22753a
L
6150{
6151 return (sym->st_shndx == SHN_COMMON
6152 || sym->st_shndx == SHN_X86_64_LCOMMON);
6153}
6154
6155static unsigned int
351f65ca 6156elf_x86_64_common_section_index (asection *sec)
3b22753a
L
6157{
6158 if ((elf_section_flags (sec) & SHF_X86_64_LARGE) == 0)
6159 return SHN_COMMON;
6160 else
6161 return SHN_X86_64_LCOMMON;
6162}
6163
6164static asection *
351f65ca 6165elf_x86_64_common_section (asection *sec)
3b22753a
L
6166{
6167 if ((elf_section_flags (sec) & SHF_X86_64_LARGE) == 0)
6168 return bfd_com_section_ptr;
6169 else
6170 return &_bfd_elf_large_com_section;
6171}
6172
6173static bfd_boolean
5d13b3b3
AM
6174elf_x86_64_merge_symbol (struct elf_link_hash_entry *h,
6175 const Elf_Internal_Sym *sym,
351f65ca 6176 asection **psec,
5d13b3b3
AM
6177 bfd_boolean newdef,
6178 bfd_boolean olddef,
351f65ca 6179 bfd *oldbfd,
5d13b3b3 6180 const asection *oldsec)
3b22753a
L
6181{
6182 /* A normal common symbol and a large common symbol result in a
00492999
L
6183 normal common symbol. We turn the large common symbol into a
6184 normal one. */
5d13b3b3 6185 if (!olddef
3b22753a 6186 && h->root.type == bfd_link_hash_common
5d13b3b3
AM
6187 && !newdef
6188 && bfd_is_com_section (*psec)
6189 && oldsec != *psec)
3b22753a 6190 {
00492999 6191 if (sym->st_shndx == SHN_COMMON
5d13b3b3 6192 && (elf_section_flags (oldsec) & SHF_X86_64_LARGE) != 0)
00492999
L
6193 {
6194 h->root.u.c.p->section
6195 = bfd_make_section_old_way (oldbfd, "COMMON");
6196 h->root.u.c.p->section->flags = SEC_ALLOC;
6197 }
6198 else if (sym->st_shndx == SHN_X86_64_LCOMMON
5d13b3b3
AM
6199 && (elf_section_flags (oldsec) & SHF_X86_64_LARGE) == 0)
6200 *psec = bfd_com_section_ptr;
3b22753a
L
6201 }
6202
6203 return TRUE;
6204}
6205
6206static int
351f65ca
L
6207elf_x86_64_additional_program_headers (bfd *abfd,
6208 struct bfd_link_info *info ATTRIBUTE_UNUSED)
3b22753a
L
6209{
6210 asection *s;
9a2e389a 6211 int count = 0;
3b22753a
L
6212
6213 /* Check to see if we need a large readonly segment. */
6214 s = bfd_get_section_by_name (abfd, ".lrodata");
6215 if (s && (s->flags & SEC_LOAD))
6216 count++;
6217
6218 /* Check to see if we need a large data segment. Since .lbss sections
6219 is placed right after the .bss section, there should be no need for
6220 a large data segment just because of .lbss. */
6221 s = bfd_get_section_by_name (abfd, ".ldata");
6222 if (s && (s->flags & SEC_LOAD))
6223 count++;
6224
6225 return count;
6226}
6227
fdc90cb4
JJ
6228/* Return TRUE if symbol should be hashed in the `.gnu.hash' section. */
6229
6230static bfd_boolean
351f65ca 6231elf_x86_64_hash_symbol (struct elf_link_hash_entry *h)
fdc90cb4
JJ
6232{
6233 if (h->plt.offset != (bfd_vma) -1
6234 && !h->def_regular
6235 && !h->pointer_equality_needed)
6236 return FALSE;
6237
6238 return _bfd_elf_hash_symbol (h);
6239}
6240
c543bf9a
L
6241/* Return TRUE iff relocations for INPUT are compatible with OUTPUT. */
6242
6243static bfd_boolean
6244elf_x86_64_relocs_compatible (const bfd_target *input,
6245 const bfd_target *output)
6246{
6247 return ((xvec_get_elf_backend_data (input)->s->elfclass
6248 == xvec_get_elf_backend_data (output)->s->elfclass)
6249 && _bfd_elf_relocs_compatible (input, output));
6250}
6251
9a2e389a 6252static const struct bfd_elf_special_section
351f65ca 6253 elf_x86_64_special_sections[]=
3b22753a 6254{
0112cd26
NC
6255 { STRING_COMMA_LEN (".gnu.linkonce.lb"), -2, SHT_NOBITS, SHF_ALLOC + SHF_WRITE + SHF_X86_64_LARGE},
6256 { STRING_COMMA_LEN (".gnu.linkonce.lr"), -2, SHT_PROGBITS, SHF_ALLOC + SHF_X86_64_LARGE},
6257 { STRING_COMMA_LEN (".gnu.linkonce.lt"), -2, SHT_PROGBITS, SHF_ALLOC + SHF_EXECINSTR + SHF_X86_64_LARGE},
6258 { STRING_COMMA_LEN (".lbss"), -2, SHT_NOBITS, SHF_ALLOC + SHF_WRITE + SHF_X86_64_LARGE},
6259 { STRING_COMMA_LEN (".ldata"), -2, SHT_PROGBITS, SHF_ALLOC + SHF_WRITE + SHF_X86_64_LARGE},
6260 { STRING_COMMA_LEN (".lrodata"), -2, SHT_PROGBITS, SHF_ALLOC + SHF_X86_64_LARGE},
6261 { NULL, 0, 0, 0, 0 }
3b22753a
L
6262};
6263
6d00b590 6264#define TARGET_LITTLE_SYM x86_64_elf64_vec
70256ad8
AJ
6265#define TARGET_LITTLE_NAME "elf64-x86-64"
6266#define ELF_ARCH bfd_arch_i386
ae95ffa6 6267#define ELF_TARGET_ID X86_64_ELF_DATA
70256ad8 6268#define ELF_MACHINE_CODE EM_X86_64
f7661549 6269#define ELF_MAXPAGESIZE 0x200000
2043964e 6270#define ELF_MINPAGESIZE 0x1000
24718e3b 6271#define ELF_COMMONPAGESIZE 0x1000
70256ad8
AJ
6272
6273#define elf_backend_can_gc_sections 1
51b64d56 6274#define elf_backend_can_refcount 1
70256ad8
AJ
6275#define elf_backend_want_got_plt 1
6276#define elf_backend_plt_readonly 1
6277#define elf_backend_want_plt_sym 0
6278#define elf_backend_got_header_size (GOT_ENTRY_SIZE*3)
b491616a 6279#define elf_backend_rela_normal 1
e41b3a13 6280#define elf_backend_plt_alignment 4
f7483970 6281#define elf_backend_extern_protected_data 1
70256ad8 6282
351f65ca 6283#define elf_info_to_howto elf_x86_64_info_to_howto
70256ad8 6284
70256ad8 6285#define bfd_elf64_bfd_link_hash_table_create \
351f65ca 6286 elf_x86_64_link_hash_table_create
351f65ca 6287#define bfd_elf64_bfd_reloc_type_lookup elf_x86_64_reloc_type_lookup
157090f7 6288#define bfd_elf64_bfd_reloc_name_lookup \
351f65ca 6289 elf_x86_64_reloc_name_lookup
70256ad8 6290
351f65ca 6291#define elf_backend_adjust_dynamic_symbol elf_x86_64_adjust_dynamic_symbol
c543bf9a 6292#define elf_backend_relocs_compatible elf_x86_64_relocs_compatible
351f65ca
L
6293#define elf_backend_check_relocs elf_x86_64_check_relocs
6294#define elf_backend_copy_indirect_symbol elf_x86_64_copy_indirect_symbol
6295#define elf_backend_create_dynamic_sections elf_x86_64_create_dynamic_sections
6296#define elf_backend_finish_dynamic_sections elf_x86_64_finish_dynamic_sections
6297#define elf_backend_finish_dynamic_symbol elf_x86_64_finish_dynamic_symbol
6298#define elf_backend_gc_mark_hook elf_x86_64_gc_mark_hook
6299#define elf_backend_gc_sweep_hook elf_x86_64_gc_sweep_hook
6300#define elf_backend_grok_prstatus elf_x86_64_grok_prstatus
6301#define elf_backend_grok_psinfo elf_x86_64_grok_psinfo
8fd79e71
L
6302#ifdef CORE_HEADER
6303#define elf_backend_write_core_note elf_x86_64_write_core_note
6304#endif
351f65ca
L
6305#define elf_backend_reloc_type_class elf_x86_64_reloc_type_class
6306#define elf_backend_relocate_section elf_x86_64_relocate_section
6307#define elf_backend_size_dynamic_sections elf_x86_64_size_dynamic_sections
6308#define elf_backend_always_size_sections elf_x86_64_always_size_sections
74541ad4 6309#define elf_backend_init_index_section _bfd_elf_init_1_index_section
407443a3 6310#define elf_backend_object_p elf64_x86_64_elf_object_p
351f65ca 6311#define bfd_elf64_mkobject elf_x86_64_mkobject
0ff2b86e 6312#define bfd_elf64_get_synthetic_symtab elf_x86_64_get_synthetic_symtab
8d88c4ca 6313
d2b2c203 6314#define elf_backend_section_from_shdr \
351f65ca 6315 elf_x86_64_section_from_shdr
d2b2c203 6316
3b22753a 6317#define elf_backend_section_from_bfd_section \
351f65ca 6318 elf_x86_64_elf_section_from_bfd_section
3b22753a 6319#define elf_backend_add_symbol_hook \
351f65ca 6320 elf_x86_64_add_symbol_hook
3b22753a 6321#define elf_backend_symbol_processing \
351f65ca 6322 elf_x86_64_symbol_processing
3b22753a 6323#define elf_backend_common_section_index \
351f65ca 6324 elf_x86_64_common_section_index
3b22753a 6325#define elf_backend_common_section \
351f65ca 6326 elf_x86_64_common_section
3b22753a 6327#define elf_backend_common_definition \
351f65ca 6328 elf_x86_64_common_definition
3b22753a 6329#define elf_backend_merge_symbol \
351f65ca 6330 elf_x86_64_merge_symbol
3b22753a 6331#define elf_backend_special_sections \
351f65ca 6332 elf_x86_64_special_sections
3b22753a 6333#define elf_backend_additional_program_headers \
351f65ca 6334 elf_x86_64_additional_program_headers
fdc90cb4 6335#define elf_backend_hash_symbol \
351f65ca 6336 elf_x86_64_hash_symbol
3b22753a 6337
8d88c4ca 6338#include "elf64-target.h"
9d7cbccd 6339
6036f486
ES
6340/* CloudABI support. */
6341
6342#undef TARGET_LITTLE_SYM
6343#define TARGET_LITTLE_SYM x86_64_elf64_cloudabi_vec
6344#undef TARGET_LITTLE_NAME
6345#define TARGET_LITTLE_NAME "elf64-x86-64-cloudabi"
6346
6347#undef ELF_OSABI
6348#define ELF_OSABI ELFOSABI_CLOUDABI
6349
6350#undef elf64_bed
6351#define elf64_bed elf64_x86_64_cloudabi_bed
6352
6353#include "elf64-target.h"
6354
9d7cbccd
NC
6355/* FreeBSD support. */
6356
6357#undef TARGET_LITTLE_SYM
6d00b590 6358#define TARGET_LITTLE_SYM x86_64_elf64_fbsd_vec
9d7cbccd
NC
6359#undef TARGET_LITTLE_NAME
6360#define TARGET_LITTLE_NAME "elf64-x86-64-freebsd"
6361
d1036acb
L
6362#undef ELF_OSABI
6363#define ELF_OSABI ELFOSABI_FREEBSD
9d7cbccd 6364
9d7cbccd
NC
6365#undef elf64_bed
6366#define elf64_bed elf64_x86_64_fbsd_bed
6367
6368#include "elf64-target.h"
8a9036a4 6369
a6cc6b3b
RO
6370/* Solaris 2 support. */
6371
6372#undef TARGET_LITTLE_SYM
6d00b590 6373#define TARGET_LITTLE_SYM x86_64_elf64_sol2_vec
a6cc6b3b
RO
6374#undef TARGET_LITTLE_NAME
6375#define TARGET_LITTLE_NAME "elf64-x86-64-sol2"
6376
6377/* Restore default: we cannot use ELFOSABI_SOLARIS, otherwise ELFOSABI_NONE
6378 objects won't be recognized. */
6379#undef ELF_OSABI
6380
6381#undef elf64_bed
6382#define elf64_bed elf64_x86_64_sol2_bed
6383
7dc98aea
RO
6384/* The 64-bit static TLS arena size is rounded to the nearest 16-byte
6385 boundary. */
6386#undef elf_backend_static_tls_alignment
6387#define elf_backend_static_tls_alignment 16
6388
a6cc6b3b
RO
6389/* The Solaris 2 ABI requires a plt symbol on all platforms.
6390
6391 Cf. Linker and Libraries Guide, Ch. 2, Link-Editor, Generating the Output
6392 File, p.63. */
6393#undef elf_backend_want_plt_sym
6394#define elf_backend_want_plt_sym 1
6395
6396#include "elf64-target.h"
6397
8059fb19
RM
6398/* Native Client support. */
6399
64b384e1
RM
6400static bfd_boolean
6401elf64_x86_64_nacl_elf_object_p (bfd *abfd)
6402{
6403 /* Set the right machine number for a NaCl x86-64 ELF64 file. */
6404 bfd_default_set_arch_mach (abfd, bfd_arch_i386, bfd_mach_x86_64_nacl);
6405 return TRUE;
6406}
6407
8059fb19 6408#undef TARGET_LITTLE_SYM
6d00b590 6409#define TARGET_LITTLE_SYM x86_64_elf64_nacl_vec
8059fb19
RM
6410#undef TARGET_LITTLE_NAME
6411#define TARGET_LITTLE_NAME "elf64-x86-64-nacl"
6412#undef elf64_bed
6413#define elf64_bed elf64_x86_64_nacl_bed
6414
6415#undef ELF_MAXPAGESIZE
6416#undef ELF_MINPAGESIZE
6417#undef ELF_COMMONPAGESIZE
6418#define ELF_MAXPAGESIZE 0x10000
6419#define ELF_MINPAGESIZE 0x10000
6420#define ELF_COMMONPAGESIZE 0x10000
6421
6422/* Restore defaults. */
6423#undef ELF_OSABI
6424#undef elf_backend_static_tls_alignment
6425#undef elf_backend_want_plt_sym
6426#define elf_backend_want_plt_sym 0
6427
6428/* NaCl uses substantially different PLT entries for the same effects. */
6429
6430#undef elf_backend_plt_alignment
6431#define elf_backend_plt_alignment 5
6432#define NACL_PLT_ENTRY_SIZE 64
6433#define NACLMASK 0xe0 /* 32-byte alignment mask. */
6434
6435static const bfd_byte elf_x86_64_nacl_plt0_entry[NACL_PLT_ENTRY_SIZE] =
6436 {
6437 0xff, 0x35, 8, 0, 0, 0, /* pushq GOT+8(%rip) */
6438 0x4c, 0x8b, 0x1d, 16, 0, 0, 0, /* mov GOT+16(%rip), %r11 */
6439 0x41, 0x83, 0xe3, NACLMASK, /* and $-32, %r11d */
6440 0x4d, 0x01, 0xfb, /* add %r15, %r11 */
6441 0x41, 0xff, 0xe3, /* jmpq *%r11 */
6442
ea2d813e 6443 /* 9-byte nop sequence to pad out to the next 32-byte boundary. */
70cc877f 6444 0x66, 0x0f, 0x1f, 0x84, 0, 0, 0, 0, 0, /* nopw 0x0(%rax,%rax,1) */
ea2d813e
RM
6445
6446 /* 32 bytes of nop to pad out to the standard size. */
8059fb19
RM
6447 0x66, 0x66, 0x66, 0x66, 0x66, 0x66, /* excess data32 prefixes */
6448 0x2e, 0x0f, 0x1f, 0x84, 0, 0, 0, 0, 0, /* nopw %cs:0x0(%rax,%rax,1) */
6449 0x66, 0x66, 0x66, 0x66, 0x66, 0x66, /* excess data32 prefixes */
6450 0x2e, 0x0f, 0x1f, 0x84, 0, 0, 0, 0, 0, /* nopw %cs:0x0(%rax,%rax,1) */
ea2d813e
RM
6451 0x66, /* excess data32 prefix */
6452 0x90 /* nop */
8059fb19
RM
6453 };
6454
6455static const bfd_byte elf_x86_64_nacl_plt_entry[NACL_PLT_ENTRY_SIZE] =
6456 {
6457 0x4c, 0x8b, 0x1d, 0, 0, 0, 0, /* mov name@GOTPCREL(%rip),%r11 */
6458 0x41, 0x83, 0xe3, NACLMASK, /* and $-32, %r11d */
6459 0x4d, 0x01, 0xfb, /* add %r15, %r11 */
6460 0x41, 0xff, 0xe3, /* jmpq *%r11 */
6461
6462 /* 15-byte nop sequence to pad out to the next 32-byte boundary. */
6463 0x66, 0x66, 0x66, 0x66, 0x66, 0x66, /* excess data32 prefixes */
6464 0x2e, 0x0f, 0x1f, 0x84, 0, 0, 0, 0, 0, /* nopw %cs:0x0(%rax,%rax,1) */
6465
6466 /* Lazy GOT entries point here (32-byte aligned). */
6467 0x68, /* pushq immediate */
6468 0, 0, 0, 0, /* replaced with index into relocation table. */
6469 0xe9, /* jmp relative */
6470 0, 0, 0, 0, /* replaced with offset to start of .plt0. */
6471
6472 /* 22 bytes of nop to pad out to the standard size. */
6473 0x66, 0x66, 0x66, 0x66, 0x66, 0x66, /* excess data32 prefixes */
6474 0x2e, 0x0f, 0x1f, 0x84, 0, 0, 0, 0, 0, /* nopw %cs:0x0(%rax,%rax,1) */
6475 0x0f, 0x1f, 0x80, 0, 0, 0, 0, /* nopl 0x0(%rax) */
6476 };
6477
6478/* .eh_frame covering the .plt section. */
6479
6480static const bfd_byte elf_x86_64_nacl_eh_frame_plt[] =
6481 {
6482#if (PLT_CIE_LENGTH != 20 \
6483 || PLT_FDE_LENGTH != 36 \
6484 || PLT_FDE_START_OFFSET != 4 + PLT_CIE_LENGTH + 8 \
6485 || PLT_FDE_LEN_OFFSET != 4 + PLT_CIE_LENGTH + 12)
6486# error "Need elf_x86_64_backend_data parameters for eh_frame_plt offsets!"
6487#endif
6488 PLT_CIE_LENGTH, 0, 0, 0, /* CIE length */
6489 0, 0, 0, 0, /* CIE ID */
6490 1, /* CIE version */
6491 'z', 'R', 0, /* Augmentation string */
6492 1, /* Code alignment factor */
6493 0x78, /* Data alignment factor */
6494 16, /* Return address column */
6495 1, /* Augmentation size */
6496 DW_EH_PE_pcrel | DW_EH_PE_sdata4, /* FDE encoding */
6497 DW_CFA_def_cfa, 7, 8, /* DW_CFA_def_cfa: r7 (rsp) ofs 8 */
6498 DW_CFA_offset + 16, 1, /* DW_CFA_offset: r16 (rip) at cfa-8 */
6499 DW_CFA_nop, DW_CFA_nop,
6500
6501 PLT_FDE_LENGTH, 0, 0, 0, /* FDE length */
6502 PLT_CIE_LENGTH + 8, 0, 0, 0,/* CIE pointer */
6503 0, 0, 0, 0, /* R_X86_64_PC32 .plt goes here */
6504 0, 0, 0, 0, /* .plt size goes here */
6505 0, /* Augmentation size */
6506 DW_CFA_def_cfa_offset, 16, /* DW_CFA_def_cfa_offset: 16 */
6507 DW_CFA_advance_loc + 6, /* DW_CFA_advance_loc: 6 to __PLT__+6 */
6508 DW_CFA_def_cfa_offset, 24, /* DW_CFA_def_cfa_offset: 24 */
6509 DW_CFA_advance_loc + 58, /* DW_CFA_advance_loc: 58 to __PLT__+64 */
6510 DW_CFA_def_cfa_expression, /* DW_CFA_def_cfa_expression */
6511 13, /* Block length */
6512 DW_OP_breg7, 8, /* DW_OP_breg7 (rsp): 8 */
6513 DW_OP_breg16, 0, /* DW_OP_breg16 (rip): 0 */
6514 DW_OP_const1u, 63, DW_OP_and, DW_OP_const1u, 37, DW_OP_ge,
6515 DW_OP_lit3, DW_OP_shl, DW_OP_plus,
6516 DW_CFA_nop, DW_CFA_nop
6517 };
6518
6519static const struct elf_x86_64_backend_data elf_x86_64_nacl_arch_bed =
6520 {
6521 elf_x86_64_nacl_plt0_entry, /* plt0_entry */
6522 elf_x86_64_nacl_plt_entry, /* plt_entry */
6523 NACL_PLT_ENTRY_SIZE, /* plt_entry_size */
6524 2, /* plt0_got1_offset */
6525 9, /* plt0_got2_offset */
6526 13, /* plt0_got2_insn_end */
6527 3, /* plt_got_offset */
6528 33, /* plt_reloc_offset */
6529 38, /* plt_plt_offset */
6530 7, /* plt_got_insn_size */
6531 42, /* plt_plt_insn_end */
6532 32, /* plt_lazy_offset */
6533 elf_x86_64_nacl_eh_frame_plt, /* eh_frame_plt */
6534 sizeof (elf_x86_64_nacl_eh_frame_plt), /* eh_frame_plt_size */
6535 };
6536
6537#undef elf_backend_arch_data
6538#define elf_backend_arch_data &elf_x86_64_nacl_arch_bed
6539
64b384e1
RM
6540#undef elf_backend_object_p
6541#define elf_backend_object_p elf64_x86_64_nacl_elf_object_p
5a68afcf
RM
6542#undef elf_backend_modify_segment_map
6543#define elf_backend_modify_segment_map nacl_modify_segment_map
6544#undef elf_backend_modify_program_headers
6545#define elf_backend_modify_program_headers nacl_modify_program_headers
887badb3
RM
6546#undef elf_backend_final_write_processing
6547#define elf_backend_final_write_processing nacl_final_write_processing
5a68afcf 6548
8059fb19
RM
6549#include "elf64-target.h"
6550
6551/* Native Client x32 support. */
6552
64b384e1
RM
6553static bfd_boolean
6554elf32_x86_64_nacl_elf_object_p (bfd *abfd)
6555{
6556 /* Set the right machine number for a NaCl x86-64 ELF32 file. */
6557 bfd_default_set_arch_mach (abfd, bfd_arch_i386, bfd_mach_x64_32_nacl);
6558 return TRUE;
6559}
6560
8059fb19 6561#undef TARGET_LITTLE_SYM
6d00b590 6562#define TARGET_LITTLE_SYM x86_64_elf32_nacl_vec
8059fb19
RM
6563#undef TARGET_LITTLE_NAME
6564#define TARGET_LITTLE_NAME "elf32-x86-64-nacl"
6565#undef elf32_bed
6566#define elf32_bed elf32_x86_64_nacl_bed
6567
6568#define bfd_elf32_bfd_link_hash_table_create \
6569 elf_x86_64_link_hash_table_create
8059fb19
RM
6570#define bfd_elf32_bfd_reloc_type_lookup \
6571 elf_x86_64_reloc_type_lookup
6572#define bfd_elf32_bfd_reloc_name_lookup \
6573 elf_x86_64_reloc_name_lookup
6574#define bfd_elf32_mkobject \
6575 elf_x86_64_mkobject
b7365e5d
L
6576#define bfd_elf32_get_synthetic_symtab \
6577 elf_x86_64_get_synthetic_symtab
8059fb19
RM
6578
6579#undef elf_backend_object_p
6580#define elf_backend_object_p \
64b384e1 6581 elf32_x86_64_nacl_elf_object_p
8059fb19
RM
6582
6583#undef elf_backend_bfd_from_remote_memory
6584#define elf_backend_bfd_from_remote_memory \
6585 _bfd_elf32_bfd_from_remote_memory
6586
6587#undef elf_backend_size_info
6588#define elf_backend_size_info \
6589 _bfd_elf32_size_info
6590
6591#include "elf32-target.h"
6592
6593/* Restore defaults. */
5a68afcf 6594#undef elf_backend_object_p
8059fb19 6595#define elf_backend_object_p elf64_x86_64_elf_object_p
5a68afcf
RM
6596#undef elf_backend_bfd_from_remote_memory
6597#undef elf_backend_size_info
6598#undef elf_backend_modify_segment_map
6599#undef elf_backend_modify_program_headers
887badb3 6600#undef elf_backend_final_write_processing
8059fb19 6601
8a9036a4
L
6602/* Intel L1OM support. */
6603
6604static bfd_boolean
6605elf64_l1om_elf_object_p (bfd *abfd)
6606{
6607 /* Set the right machine number for an L1OM elf64 file. */
6608 bfd_default_set_arch_mach (abfd, bfd_arch_l1om, bfd_mach_l1om);
6609 return TRUE;
6610}
6611
6612#undef TARGET_LITTLE_SYM
6d00b590 6613#define TARGET_LITTLE_SYM l1om_elf64_vec
8a9036a4
L
6614#undef TARGET_LITTLE_NAME
6615#define TARGET_LITTLE_NAME "elf64-l1om"
6616#undef ELF_ARCH
6617#define ELF_ARCH bfd_arch_l1om
6618
6619#undef ELF_MACHINE_CODE
6620#define ELF_MACHINE_CODE EM_L1OM
6621
6622#undef ELF_OSABI
6623
6624#undef elf64_bed
6625#define elf64_bed elf64_l1om_bed
6626
6627#undef elf_backend_object_p
6628#define elf_backend_object_p elf64_l1om_elf_object_p
6629
8059fb19
RM
6630/* Restore defaults. */
6631#undef ELF_MAXPAGESIZE
6632#undef ELF_MINPAGESIZE
6633#undef ELF_COMMONPAGESIZE
6634#define ELF_MAXPAGESIZE 0x200000
6635#define ELF_MINPAGESIZE 0x1000
6636#define ELF_COMMONPAGESIZE 0x1000
6637#undef elf_backend_plt_alignment
6638#define elf_backend_plt_alignment 4
6639#undef elf_backend_arch_data
6640#define elf_backend_arch_data &elf_x86_64_arch_bed
1a0c107f 6641
8a9036a4
L
6642#include "elf64-target.h"
6643
6644/* FreeBSD L1OM support. */
6645
6646#undef TARGET_LITTLE_SYM
6d00b590 6647#define TARGET_LITTLE_SYM l1om_elf64_fbsd_vec
8a9036a4
L
6648#undef TARGET_LITTLE_NAME
6649#define TARGET_LITTLE_NAME "elf64-l1om-freebsd"
6650
6651#undef ELF_OSABI
6652#define ELF_OSABI ELFOSABI_FREEBSD
6653
6654#undef elf64_bed
6655#define elf64_bed elf64_l1om_fbsd_bed
6656
8a9036a4 6657#include "elf64-target.h"
351f65ca 6658
7a9068fe
L
6659/* Intel K1OM support. */
6660
6661static bfd_boolean
6662elf64_k1om_elf_object_p (bfd *abfd)
6663{
6664 /* Set the right machine number for an K1OM elf64 file. */
6665 bfd_default_set_arch_mach (abfd, bfd_arch_k1om, bfd_mach_k1om);
6666 return TRUE;
6667}
6668
6669#undef TARGET_LITTLE_SYM
6d00b590 6670#define TARGET_LITTLE_SYM k1om_elf64_vec
7a9068fe
L
6671#undef TARGET_LITTLE_NAME
6672#define TARGET_LITTLE_NAME "elf64-k1om"
6673#undef ELF_ARCH
6674#define ELF_ARCH bfd_arch_k1om
6675
6676#undef ELF_MACHINE_CODE
6677#define ELF_MACHINE_CODE EM_K1OM
6678
6679#undef ELF_OSABI
6680
6681#undef elf64_bed
6682#define elf64_bed elf64_k1om_bed
6683
6684#undef elf_backend_object_p
6685#define elf_backend_object_p elf64_k1om_elf_object_p
6686
6687#undef elf_backend_static_tls_alignment
6688
6689#undef elf_backend_want_plt_sym
6690#define elf_backend_want_plt_sym 0
6691
6692#include "elf64-target.h"
6693
6694/* FreeBSD K1OM support. */
6695
6696#undef TARGET_LITTLE_SYM
6d00b590 6697#define TARGET_LITTLE_SYM k1om_elf64_fbsd_vec
7a9068fe
L
6698#undef TARGET_LITTLE_NAME
6699#define TARGET_LITTLE_NAME "elf64-k1om-freebsd"
6700
6701#undef ELF_OSABI
6702#define ELF_OSABI ELFOSABI_FREEBSD
6703
6704#undef elf64_bed
6705#define elf64_bed elf64_k1om_fbsd_bed
6706
6707#include "elf64-target.h"
6708
351f65ca
L
6709/* 32bit x86-64 support. */
6710
351f65ca 6711#undef TARGET_LITTLE_SYM
6d00b590 6712#define TARGET_LITTLE_SYM x86_64_elf32_vec
351f65ca
L
6713#undef TARGET_LITTLE_NAME
6714#define TARGET_LITTLE_NAME "elf32-x86-64"
8059fb19 6715#undef elf32_bed
351f65ca
L
6716
6717#undef ELF_ARCH
6718#define ELF_ARCH bfd_arch_i386
6719
6720#undef ELF_MACHINE_CODE
6721#define ELF_MACHINE_CODE EM_X86_64
6722
351f65ca
L
6723#undef ELF_OSABI
6724
351f65ca
L
6725#undef elf_backend_object_p
6726#define elf_backend_object_p \
6727 elf32_x86_64_elf_object_p
6728
6729#undef elf_backend_bfd_from_remote_memory
6730#define elf_backend_bfd_from_remote_memory \
6731 _bfd_elf32_bfd_from_remote_memory
6732
6733#undef elf_backend_size_info
6734#define elf_backend_size_info \
6735 _bfd_elf32_size_info
6736
6737#include "elf32-target.h"